diff --git a/OpenSim/Region/CoreModules/World/Serialiser/Tests/SerialiserTests.cs b/OpenSim/Region/CoreModules/World/Serialiser/Tests/SerialiserTests.cs
index bac78270a7..f10e848f68 100644
--- a/OpenSim/Region/CoreModules/World/Serialiser/Tests/SerialiserTests.cs
+++ b/OpenSim/Region/CoreModules/World/Serialiser/Tests/SerialiserTests.cs
@@ -303,15 +303,19 @@ namespace OpenSim.Region.CoreModules.World.Serialiser.Tests
                 {
                     case "UUID":
                         xtr.ReadStartElement("UUID");
-                        uuid = UUID.Parse(xtr.ReadElementString("Guid"));
-                        xtr.ReadEndElement();
+                        try
+                        {
+                            uuid = UUID.Parse(xtr.ReadElementString("UUID"));
+                            xtr.ReadEndElement();
+                        }
+                        catch { } // ignore everything but <UUID><UUID>...</UUID></UUID>
                         break;
                     case "Name":
                         name = xtr.ReadElementContentAsString();
                         break;
                     case "CreatorID":
                         xtr.ReadStartElement("CreatorID");
-                        creatorId = UUID.Parse(xtr.ReadElementString("Guid"));
+                        creatorId = UUID.Parse(xtr.ReadElementString("UUID"));
                         xtr.ReadEndElement();
                         break;
                 }
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index 39b109ba38..7a6449decf 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -39,6 +39,7 @@ using OpenMetaverse.Packets;
 using OpenSim.Framework;
 using OpenSim.Region.Framework.Interfaces;
 using OpenSim.Region.Framework.Scenes.Scripting;
+using OpenSim.Region.Framework.Scenes.Serialization;
 using OpenSim.Region.Physics.Manager;
 
 namespace OpenSim.Region.Framework.Scenes
@@ -118,40 +119,36 @@ namespace OpenSim.Region.Framework.Scenes
         /// <value>
         /// Is this sop a root part?
         /// </value>
-        [XmlIgnore]
+        
         public bool IsRoot 
         {
            get { return ParentGroup.RootPart == this; } 
         }
 
-        // use only one serializer to give the runtime a chance to optimize it (it won't do that if you
-        // use a new instance every time)
-        private static XmlSerializer serializer = new XmlSerializer(typeof (SceneObjectPart));
-
         #region Fields
 
         public bool AllowedDrop;
 
-        [XmlIgnore]
+        
         public bool DIE_AT_EDGE;
 
-        [XmlIgnore]
+        
         public bool RETURN_AT_EDGE;
 
-        [XmlIgnore]
+        
         public bool BlockGrab;
 
-        [XmlIgnore]
+        
         public bool StatusSandbox;
 
-        [XmlIgnore]
+        
         public Vector3 StatusSandboxPos;
 
         // TODO: This needs to be persisted in next XML version update!
-        [XmlIgnore]
+        
         public readonly int[] PayPrice = {-2,-2,-2,-2,-2};
         
-        [XmlIgnore]
+        
         public PhysicsActor PhysActor
         {
             get { return m_physActor; }
@@ -166,43 +163,43 @@ namespace OpenSim.Region.Framework.Scenes
         //  Note: This isn't persisted in the database right now, as the fields for that aren't just there yet.
         //        Not a big problem as long as the script that sets it remains in the prim on startup.
         //        for SL compatibility it should be persisted though (set sound / displaytext / particlesystem, kill script)
-        [XmlIgnore]
+        
         public UUID Sound;
         
-        [XmlIgnore]
+        
         public byte SoundFlags;
         
-        [XmlIgnore]
+        
         public double SoundGain;
         
-        [XmlIgnore]
+        
         public double SoundRadius;
         
-        [XmlIgnore]
+        
         public uint TimeStampFull;
         
-        [XmlIgnore]
+        
         public uint TimeStampLastActivity; // Will be used for AutoReturn
         
-        [XmlIgnore]
+        
         public uint TimeStampTerse;
 
-        [XmlIgnore]
+        
         public UUID FromItemID;
 
-        [XmlIgnore]
+        
         public UUID FromFolderID;
 
-        [XmlIgnore]
+        
         public int STATUS_ROTATE_X;
 
-        [XmlIgnore]
+        
         public int STATUS_ROTATE_Y;
 
-        [XmlIgnore]
+        
         public int STATUS_ROTATE_Z;
         
-        [XmlIgnore]
+        
         private Dictionary<int, string> m_CollisionFilter = new Dictionary<int, string>();
                
         /// <value>
@@ -211,68 +208,68 @@ namespace OpenSim.Region.Framework.Scenes
         /// </value>
         private UUID m_fromUserInventoryItemID;
         
-        [XmlIgnore]
+        
         public UUID FromUserInventoryItemID
         {
             get { return m_fromUserInventoryItemID; }
         }
 
-        [XmlIgnore]
+        
         public bool IsAttachment;
 
-        [XmlIgnore]
+        
         public scriptEvents AggregateScriptEvents;
 
-        [XmlIgnore]
+        
         public UUID AttachedAvatar;
 
-        [XmlIgnore]
+        
         public Vector3 AttachedPos;
 
-        [XmlIgnore]
+        
         public uint AttachmentPoint;
 
-        [XmlIgnore]
+        
         public Vector3 RotationAxis = Vector3.One;
 
-        [XmlIgnore]
+        
         public bool VolumeDetectActive; // XmlIgnore set to avoid problems with persistance until I come to care for this
                                         // Certainly this must be a persistant setting finally
 
-        [XmlIgnore]
+        
         public bool IsWaitingForFirstSpinUpdatePacket;
 
-        [XmlIgnore]
+        
         public Quaternion SpinOldOrientation = Quaternion.Identity;
 
-        [XmlIgnore]
+        
         public Quaternion m_APIDTarget = Quaternion.Identity;
 
-        [XmlIgnore]
+        
         public float m_APIDDamp = 0;
 
-        [XmlIgnore]
+        
         public float m_APIDStrength = 0;
 
         /// <summary>
         /// This part's inventory
         /// </summary>
-        [XmlIgnore]
+        
         public IEntityInventory Inventory
         {
             get { return m_inventory; }
         }
         protected SceneObjectPartInventory m_inventory;
 
-        [XmlIgnore]
+        
         public bool Undoing;
 
-        [XmlIgnore]
+        
         public bool IgnoreUndoUpdate = false;
 
-        [XmlIgnore]
+        
         private PrimFlags LocalFlags;
-        [XmlIgnore]
+        
         private float m_damage = -1.0f;
         private byte[] m_TextureAnimation;
         private byte m_clickAction;
@@ -280,9 +277,9 @@ namespace OpenSim.Region.Framework.Scenes
         private string m_description = String.Empty;
         private readonly List<uint> m_lastColliders = new List<uint>();
         private int m_linkNum;
-        [XmlIgnore]
+        
         private int m_scriptAccessPin;
-        [XmlIgnore]
+        
         private readonly Dictionary<UUID, scriptEvents> m_scriptEvents = new Dictionary<UUID, scriptEvents>();
         private string m_sitName = String.Empty;
         private Quaternion m_sitTargetOrientation = Quaternion.Identity;
@@ -548,7 +545,7 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         
-        [XmlIgnore]
+        
         public Dictionary<int, string> CollisionFilter
         {
             get { return m_CollisionFilter; }
@@ -558,21 +555,21 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        [XmlIgnore]
+        
         public Quaternion APIDTarget
         {
             get { return m_APIDTarget; }
             set { m_APIDTarget = value; }
         }
 
-        [XmlIgnore]
+        
         public float APIDDamp
         {
             get { return m_APIDDamp; }
             set { m_APIDDamp = value; }
         }
 
-        [XmlIgnore]
+        
         public float APIDStrength
         {
             get { return m_APIDStrength; }
@@ -618,35 +615,35 @@ namespace OpenSim.Region.Framework.Scenes
             set { m_LoopSoundSlavePrims = value; }
         }
 
-        [XmlIgnore]
+        
         public Byte[] TextureAnimation
         {
             get { return m_TextureAnimation; }
             set { m_TextureAnimation = value; }
         }
 
-        [XmlIgnore]
+        
         public Byte[] ParticleSystem
         {
             get { return m_particleSystem; }
             set { m_particleSystem = value; }
         }
 
-        [XmlIgnore]
+        
         public DateTime Expires
         {
             get { return m_expires; }
             set { m_expires = value; }
         }
 
-        [XmlIgnore]
+        
         public DateTime Rezzed
         {
             get { return m_rezzed; }
             set { m_rezzed = value; }
         }
 
-        [XmlIgnore]
+        
         public float Damage
         {
             get { return m_damage; }
@@ -1019,7 +1016,7 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        [XmlIgnore]
+        
         public bool CreateSelected
         {
             get { return m_createSelected; }
@@ -1201,14 +1198,14 @@ namespace OpenSim.Region.Framework.Scenes
             }
         }
 
-        [XmlIgnore]
+        
         public UUID SitTargetAvatar
         {
             get { return m_sitTargetAvatar; }
             set { m_sitTargetAvatar = value; }
         }
 
-        [XmlIgnore]
+        
         public virtual UUID RegionID
         {
             get
@@ -1222,7 +1219,7 @@ namespace OpenSim.Region.Framework.Scenes
         }
 
         private UUID _parentUUID = UUID.Zero;
-        [XmlIgnore]
+        
         public UUID ParentUUID
         {
             get
@@ -1236,7 +1233,7 @@ namespace OpenSim.Region.Framework.Scenes
             set { _parentUUID = value; }
         }
 
-        [XmlIgnore]
+        
         public string SitAnimation
         {
             get { return m_sitAnimation; }
@@ -1850,7 +1847,7 @@ namespace OpenSim.Region.Framework.Scenes
         /// </summary>
         /// <param name="xmlReader"></param>
         /// <returns></returns>
-        public static SceneObjectPart FromXml(XmlReader xmlReader)
+        public static SceneObjectPart FromXml(XmlTextReader xmlReader)
         {
             return FromXml(UUID.Zero, xmlReader);
         }
@@ -1861,9 +1858,9 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="fromUserInventoryItemId">The inventory id from which this part came, if applicable</param>
         /// <param name="xmlReader"></param>
         /// <returns></returns>
-        public static SceneObjectPart FromXml(UUID fromUserInventoryItemId, XmlReader xmlReader)
+        public static SceneObjectPart FromXml(UUID fromUserInventoryItemId, XmlTextReader xmlReader)
         {
-            SceneObjectPart part = (SceneObjectPart)serializer.Deserialize(xmlReader);
+            SceneObjectPart part = SceneObjectSerializer.Xml2ToSOP(xmlReader);
             part.m_fromUserInventoryItemID = fromUserInventoryItemId;
 
             // for tempOnRez objects, we have to fix the Expire date.
@@ -4058,9 +4055,9 @@ namespace OpenSim.Region.Framework.Scenes
         /// Serialize this part to xml.
         /// </summary>
         /// <param name="xmlWriter"></param>
-        public void ToXml(XmlWriter xmlWriter)
+        public void ToXml(XmlTextWriter xmlWriter)
         {
-            serializer.Serialize(xmlWriter, this);
+            SceneObjectSerializer.SOPToXml2(xmlWriter, this, new Dictionary<string, object>());
         }
 
         public void TriggerScriptChangedEvent(Changed val)
diff --git a/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs b/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
index 9a00beaff5..252304b876 100644
--- a/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
+++ b/OpenSim/Region/Framework/Scenes/Serialization/SceneObjectSerializer.cs
@@ -67,14 +67,6 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             //m_log.DebugFormat("[SOG]: Starting deserialization of SOG");
             //int time = System.Environment.TickCount;
 
-            // libomv.types changes UUID to Guid
-            xmlData = xmlData.Replace("<UUID>", "<Guid>");
-            xmlData = xmlData.Replace("</UUID>", "</Guid>");
-
-            // Handle Nested <UUID><UUID> property
-            xmlData = xmlData.Replace("<Guid><Guid>", "<UUID><Guid>");
-            xmlData = xmlData.Replace("</Guid></Guid>", "</Guid></UUID>");
-
             try
             {
                 StringReader  sr;
@@ -126,6 +118,7 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             }
         }
 
+
         /// <summary>
         /// Serialize a scene object to the original xml format
         /// </summary>
@@ -156,7 +149,7 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
 
             writer.WriteStartElement(String.Empty, "SceneObjectGroup", String.Empty);
             writer.WriteStartElement(String.Empty, "RootPart", String.Empty);
-            ToOriginalXmlFormat(sceneObject.RootPart, writer);
+            ToXmlFormat(sceneObject.RootPart, writer);
             writer.WriteEndElement();
             writer.WriteStartElement(String.Empty, "OtherParts", String.Empty);
 
@@ -167,7 +160,7 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
                 if (part.UUID != sceneObject.RootPart.UUID)
                 {
                     writer.WriteStartElement(String.Empty, "Part", String.Empty);
-                    ToOriginalXmlFormat(part, writer);
+                    ToXmlFormat(part, writer);
                     writer.WriteEndElement();
                 }
             }
@@ -179,9 +172,9 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             //m_log.DebugFormat("[SERIALIZER]: Finished serialization of SOG {0}, {1}ms", Name, System.Environment.TickCount - time);
         }
 
-        protected static void ToOriginalXmlFormat(SceneObjectPart part, XmlTextWriter writer)
+        protected static void ToXmlFormat(SceneObjectPart part, XmlTextWriter writer)
         {
-            part.ToXml(writer);
+            SOPToXml2(writer, part, new Dictionary<string, object>());
         }
         
         public static SceneObjectGroup FromXml2Format(string xmlData)
@@ -189,14 +182,6 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             //m_log.DebugFormat("[SOG]: Starting deserialization of SOG");
             //int time = System.Environment.TickCount;
             
-            // libomv.types changes UUID to Guid
-            xmlData = xmlData.Replace("<UUID>", "<Guid>");
-            xmlData = xmlData.Replace("</UUID>", "</Guid>");
-
-            // Handle Nested <UUID><UUID> property
-            xmlData = xmlData.Replace("<Guid><Guid>", "<UUID><Guid>");
-            xmlData = xmlData.Replace("</Guid></Guid>", "</Guid></UUID>");
-
             try
             {
                 XmlDocument doc = new XmlDocument();
@@ -261,41 +246,13 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             {
                 using (XmlTextWriter writer = new XmlTextWriter(sw))
                 {
-                    ToXml2Format(sceneObject, writer);
+                    SOGToXml2(writer, sceneObject, new Dictionary<string,object>());
                 }
 
                 return sw.ToString();
             }
         }
 
-        /// <summary>
-        /// Serialize a scene object to the 'xml2' format.
-        /// </summary>
-        /// <param name="sceneObject"></param>
-        /// <returns></returns>
-        public static void ToXml2Format(SceneObjectGroup sceneObject, XmlTextWriter writer)
-        {
-            //m_log.DebugFormat("[SERIALIZER]: Starting serialization of SOG {0} to XML2", Name);
-            //int time = System.Environment.TickCount;
-
-            writer.WriteStartElement(String.Empty, "SceneObjectGroup", String.Empty);
-            sceneObject.RootPart.ToXml(writer);
-            writer.WriteStartElement(String.Empty, "OtherParts", String.Empty);
-
-            SceneObjectPart[] parts = sceneObject.Parts;
-            for (int i = 0; i < parts.Length; i++)
-            {
-                SceneObjectPart part = parts[i];
-                if (part.UUID != sceneObject.RootPart.UUID)
-                    part.ToXml(writer);
-            }
-
-            writer.WriteEndElement(); // End of OtherParts
-            sceneObject.SaveScriptedState(writer);
-            writer.WriteEndElement(); // End of SceneObjectGroup
-
-            //m_log.DebugFormat("[SERIALIZER]: Finished serialization of SOG {0} to XML2, {1}ms", Name, System.Environment.TickCount - time);
-        }
 
         #region manual serialization
 
@@ -386,6 +343,8 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             m_TaskInventoryXmlProcessors.Add("PermsGranter", ProcessTIPermsGranter);
             m_TaskInventoryXmlProcessors.Add("PermsMask", ProcessTIPermsMask);
             m_TaskInventoryXmlProcessors.Add("Type", ProcessTIType);
+            m_TaskInventoryXmlProcessors.Add("OwnerChanged", ProcessTIOwnerChanged);
+            
             #endregion
 
             #region ShapeXmlProcessors initialization
@@ -817,6 +776,11 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
             item.Type = reader.ReadElementContentAsInt("Type", String.Empty);
         }
 
+        private static void ProcessTIOwnerChanged(TaskInventoryItem item, XmlTextReader reader)
+        {
+            item.OwnerChanged = reader.ReadElementContentAsBoolean("OwnerChanged", String.Empty);
+        }
+
         #endregion
 
         #region ShapeXmlProcessors
@@ -1078,20 +1042,20 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
         public static void SOGToXml2(XmlTextWriter writer, SceneObjectGroup sog, Dictionary<string, object>options)
         {
             writer.WriteStartElement(String.Empty, "SceneObjectGroup", String.Empty);
-            SOPToXml2(writer, sog.RootPart, null, options);
+            SOPToXml2(writer, sog.RootPart, options);
             writer.WriteStartElement(String.Empty, "OtherParts", String.Empty);
 
             sog.ForEachPart(delegate(SceneObjectPart sop)
             {
                 if (sop.UUID != sog.RootPart.UUID)
-                    SOPToXml2(writer, sop, sog.RootPart, options);
+                    SOPToXml2(writer, sop, options);
             });
 
             writer.WriteEndElement();
             writer.WriteEndElement();
         }
 
-        static void SOPToXml2(XmlTextWriter writer, SceneObjectPart sop, SceneObjectPart parent, Dictionary<string, object> options)
+        public static void SOPToXml2(XmlTextWriter writer, SceneObjectPart sop, Dictionary<string, object> options)
         {
             writer.WriteStartElement("SceneObjectPart");
             writer.WriteAttributeString("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
@@ -1229,6 +1193,7 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
                     WriteUUID(writer, "PermsGranter", item.PermsGranter, options);
                     writer.WriteElementString("PermsMask", item.PermsMask.ToString());
                     writer.WriteElementString("Type", item.Type.ToString());
+                    writer.WriteElementString("OwnerChanged", item.OwnerChanged.ToString().ToLower());
 
                     writer.WriteEndElement(); // TaskInventoryItem
                 }
@@ -1398,7 +1363,7 @@ namespace OpenSim.Region.Framework.Scenes.Serialization
                 }
                 else
                 {
-                    //m_log.DebugFormat("[SceneObjectSerializer]: caught unknown element {0}", nodeName);
+                    m_log.DebugFormat("[SceneObjectSerializer]: caught unknown element {0}", nodeName);
                     reader.ReadOuterXml(); // ignore
                 }
 
diff --git a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
index 3e3a0f0589..72dce6ddcb 100644
--- a/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
+++ b/OpenSim/Region/Physics/Meshing/Meshmerizer.cs
@@ -40,6 +40,7 @@ using log4net;
 using Nini.Config;
 using System.Reflection;
 using System.IO;
+using ComponentAce.Compression.Libs.zlib;
 
 namespace OpenSim.Region.Physics.Meshing
 {
@@ -74,6 +75,7 @@ namespace OpenSim.Region.Physics.Meshing
 
         private bool cacheSculptMaps = true;
         private string decodedSculptMapPath = null;
+        private bool useMeshiesPhysicsMesh = false;
 
         private float minSizeForComplexMesh = 0.2f; // prims with all dimensions smaller than this will have a bounding box mesh
 
@@ -85,6 +87,7 @@ namespace OpenSim.Region.Physics.Meshing
 
             decodedSculptMapPath = start_config.GetString("DecodedSculptMapPath","j2kDecodeCache");
             cacheSculptMaps = start_config.GetBoolean("CacheSculptMaps", cacheSculptMaps);
+            useMeshiesPhysicsMesh = start_config.GetBoolean("UseMeshiesPhysicsMesh", useMeshiesPhysicsMesh);
 
             try
             {
@@ -268,73 +271,113 @@ namespace OpenSim.Region.Physics.Meshing
             {
                 if (((OpenMetaverse.SculptType)primShape.SculptType) == SculptType.Mesh)
                 {
-                    // add code for mesh physics proxy generation here
-                    m_log.Debug("[MESH]: mesh proxy generation not implemented yet ");
+                    if (!useMeshiesPhysicsMesh)
+                        return null;
+
+                    m_log.Debug("[MESH]: experimental mesh proxy generation");
 
                     OSD meshOsd;
 
-                    if (primShape.SculptData.Length > 0)
-                    {
-                        
-                        
-                        m_log.Debug("[MESH]: asset data length: " + primShape.SculptData.Length.ToString());
-                        byte[] header = Util.StringToBytes256("<? LLSD/Binary ?>");
-
-                        ////dump to debugging file
-                        //string filename = System.IO.Path.Combine(decodedSculptMapPath, "mesh_" + primShape.SculptTexture.ToString());
-                        //BinaryWriter writer = new BinaryWriter(File.Open(filename, FileMode.Create));
-                        //writer.Write(primShape.SculptData);
-                        //writer.Close();
-
-                    }
-                    else
+                    if (primShape.SculptData.Length <= 0)
                     {
                         m_log.Error("[MESH]: asset data is zero length");
                         return null;
                     }
 
-                    try
+                    long start = 0;
+                    using (MemoryStream data = new MemoryStream(primShape.SculptData))
                     {
-                        meshOsd = OSDParser.DeserializeLLSDBinary(primShape.SculptData, true);
-                    }
-                    catch (Exception e)
-                    {
-                        m_log.Error("[MESH]: exception decoding mesh asset: " + e.ToString());
-                        return null;
+                        meshOsd = (OSDMap)OSDParser.DeserializeLLSDBinary(data, true);
+                        start = data.Position;
                     }
 
                     if (meshOsd is OSDMap)
                     {
                         OSDMap map = (OSDMap)meshOsd;
-                        //foreach (string name in map.Keys)
-                        //    m_log.Debug("[MESH]: key:" + name + " value:" + map[name].AsString());
                         OSDMap physicsParms = (OSDMap)map["physics_shape"];
-                        int physOffset = physicsParms["offset"].AsInteger();
+                        int physOffset = physicsParms["offset"].AsInteger() + (int)start;
                         int physSize = physicsParms["size"].AsInteger();
 
                         if (physOffset < 0 || physSize == 0)
                             return null; // no mesh data in asset
 
-                        m_log.Debug("[MESH]: physOffset:" + physOffset.ToString() + " physSize:" + physSize.ToString());
-                        //MemoryStream ms = new MemoryStream(primShape.SculptData, physOffset, physSize);
-                        //GZipStream gzStream = new GZipStream(ms, CompressionMode.Decompress);
-                        
-                        //int maxSize = physSize * 5; // arbitrary guess
-                        //byte[] readBuffer = new byte[maxSize];
+                        OSD decodedMeshOsd = new OSD();
+                        byte[] meshBytes = new byte[physSize];
+                        System.Buffer.BlockCopy(primShape.SculptData, physOffset, meshBytes, 0, physSize);
+                        byte[] decompressed = new byte[physSize * 5];
+                        try
+                        {
+                            using (MemoryStream inMs = new MemoryStream(meshBytes))
+                            {
+                                using (MemoryStream outMs = new MemoryStream())
+                                {
+                                    using (ZOutputStream zOut = new ZOutputStream(outMs))
+                                    {
+                                        byte[] readBuffer = new byte[2048];
+                                        int readLen = 0;
+                                        while ((readLen = inMs.Read(readBuffer, 0, readBuffer.Length)) > 0)
+                                        {
+                                            zOut.Write(readBuffer, 0, readLen);
+                                        }
+                                        zOut.Flush();
+                                        outMs.Seek(0, SeekOrigin.Begin);
 
-                        //int bytesRead = gzStream.Read(readBuffer, 0, maxSize);
+                                        byte[] decompressedBuf = outMs.GetBuffer();
 
-                        //OSD physMeshOsd = OSDParser.DeserializeLLSDBinary(readBuffer);
+                                        decodedMeshOsd = OSDParser.DeserializeLLSDBinary(decompressedBuf, true);
+                                    }
+                                }
+                            }
+                        }
+                        catch (Exception e)
+                        {
+                            m_log.Error("[MESH]: exception decoding physical mesh: " + e.ToString());
+                            return null;
+                        }
 
+                        OSDArray decodedMeshOsdArray = null;
 
+                        // physics_shape is an array of OSDMaps, one for each submesh
+                        if (decodedMeshOsd is OSDArray)
+                        {
+                            decodedMeshOsdArray = (OSDArray)decodedMeshOsd;
+                            foreach (OSD subMeshOsd in decodedMeshOsdArray)
+                            {
+                                if (subMeshOsd is OSDMap)
+                                {
+                                    OSDMap subMeshMap = (OSDMap)subMeshOsd;
 
+                                    OpenMetaverse.Vector3 posMax = ((OSDMap)subMeshMap["PositionDomain"])["Max"].AsVector3();
+                                    OpenMetaverse.Vector3 posMin = ((OSDMap)subMeshMap["PositionDomain"])["Min"].AsVector3();
 
+                                    byte[] posBytes = subMeshMap["Position"].AsBinary();
+                                    for (int i = 0; i < posBytes.Length; i += 6)
+                                    {
+                                        ushort uX = Utils.BytesToUInt16(posBytes, i);
+                                        ushort uY = Utils.BytesToUInt16(posBytes, i + 2);
+                                        ushort uZ = Utils.BytesToUInt16(posBytes, i + 4);
 
+                                        Coord c = new Coord(
+                                        Utils.UInt16ToFloat(uX, posMin.X, posMax.X) * size.X,
+                                        Utils.UInt16ToFloat(uY, posMin.Y, posMax.Y) * size.Y,
+                                        Utils.UInt16ToFloat(uZ, posMin.Z, posMax.Z) * size.Z);
+
+                                        coords.Add(c);
+                                    }
+
+                                    byte[] triangleBytes = subMeshMap["TriangleList"].AsBinary();
+                                    for (int i = 0; i < triangleBytes.Length; i += 6)
+                                    {
+                                        ushort v1 = Utils.BytesToUInt16(triangleBytes, i);
+                                        ushort v2 = Utils.BytesToUInt16(triangleBytes, i + 2);
+                                        ushort v3 = Utils.BytesToUInt16(triangleBytes, i + 4);
+                                        Face f = new Face(v1, v2, v3);
+                                        faces.Add(f);
+                                    }
+                                }
+                            }
+                        }
                     }
-
-                    //just bail out for now until mesh code is finished
-                    return null;
-
                 }
                 else
                 {
diff --git a/bin/OpenSimDefaults.ini b/bin/OpenSimDefaults.ini
index 05358c4373..82267edcc9 100644
--- a/bin/OpenSimDefaults.ini
+++ b/bin/OpenSimDefaults.ini
@@ -147,6 +147,12 @@
     ; to false if you have compatibility problems.
     ;CacheSculptMaps = true
     
+    ; if you use Meshmerizer and want collisions for meshies, setting this to true
+    ; will cause OpenSim to attempt to decode meshies assets, extract the physics
+    ; mesh, and use it for collisions. This is currently experimental code and enabling
+    ; it may cause unexpected physics problems.
+    ;UseMeshiesPhysicsMesh = false
+    
     ; Choose one of the physics engines below
     ; OpenDynamicsEngine is by some distance the most developed physics engine
     ; basicphysics effectively does not model physics at all, making all objects phantom
diff --git a/bin/zlib.net.dll b/bin/zlib.net.dll
new file mode 100644
index 0000000000..9d156547f3
Binary files /dev/null and b/bin/zlib.net.dll differ
diff --git a/prebuild.xml b/prebuild.xml
index cc0424a692..b28d22697f 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -587,7 +587,6 @@
       <ReferencePath>../../../../bin/</ReferencePath>
       <Reference name="System"/>
       <Reference name="System.Drawing"/>
-      <Reference name="System.IO.Compression;"/>
       <Reference name="CSJ2K" path="../../../../bin/"/>
       <Reference name="OpenMetaverseTypes" path="../../../../bin/"/>
       <Reference name="OpenMetaverse" path="../../../../bin/"/>
@@ -597,6 +596,7 @@
       <Reference name="OpenSim.Framework.Console"/>
       <Reference name="OpenSim.Region.Physics.Manager"/>
       <Reference name="log4net" path="../../../../bin/"/>
+      <Reference name="zlib.net" path="../../../../bin/"/>
 
       <Files>
         <Match pattern="*.cs" recurse="true"/>