diff --git a/OpenSim/Region/Framework/Scenes/Scene.cs b/OpenSim/Region/Framework/Scenes/Scene.cs
index 58f3b61ec4..785b4c3adb 100755
--- a/OpenSim/Region/Framework/Scenes/Scene.cs
+++ b/OpenSim/Region/Framework/Scenes/Scene.cs
@@ -951,18 +951,25 @@ namespace OpenSim.Region.Framework.Scenes
                 {
                     m_minNonphys = RegionInfo.NonphysPrimMin;
                 }
+                // don't allow nonsense values
+                if(m_minNonphys < 0.001f)
+                    m_minNonphys = 0.001f;
 
                 m_maxNonphys = startupConfig.GetFloat("NonPhysicalPrimMax", m_maxNonphys);
                 if (RegionInfo.NonphysPrimMax > 0)
                 {
                     m_maxNonphys = RegionInfo.NonphysPrimMax;
                 }
+                if (m_maxNonphys > 2048)
+                    m_maxNonphys = 2048;
 
                 m_minPhys = startupConfig.GetFloat("PhysicalPrimMin", m_minPhys);
                 if (RegionInfo.PhysPrimMin > 0)
                 {
                     m_minPhys = RegionInfo.PhysPrimMin;
                 }
+                if(m_minPhys < 0.01f)
+                    m_minPhys = 0.01f;
 
                 m_maxPhys = startupConfig.GetFloat("PhysicalPrimMax", m_maxPhys);
 
@@ -970,6 +977,8 @@ namespace OpenSim.Region.Framework.Scenes
                 {
                     m_maxPhys = RegionInfo.PhysPrimMax;
                 }
+                if (m_maxPhys > 2048)
+                    m_maxPhys = 2048;
 
                 m_linksetCapacity = startupConfig.GetInt("LinksetPrims", m_linksetCapacity);
                 if (RegionInfo.LinksetCapacity > 0)
diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index a7d1809321..a23ebbfa46 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -2319,6 +2319,17 @@ namespace OpenSim.Region.Framework.Scenes
 
                 if (pa != null)
                 {
+                    if (UsePhysics != pa.IsPhysical)
+                    {
+                        float minsize = UsePhysics ? ParentGroup.Scene.m_minPhys : ParentGroup.Scene.m_minNonphys;
+                        float maxsize = UsePhysics ? ParentGroup.Scene.m_maxPhys : ParentGroup.Scene.m_maxNonphys;
+                        Vector3 scale = Scale;
+                        scale.X = Util.Clamp(scale.X, minsize, maxsize);
+                        scale.Y = Util.Clamp(scale.Y, minsize, maxsize);
+                        scale.Z = Util.Clamp(scale.Z, minsize, maxsize);
+                        Scale = scale;
+                    }
+
                     if (UsePhysics != pa.IsPhysical || isNew)
                     {
                         if (pa.IsPhysical) // implies UsePhysics==false for this block
@@ -4776,10 +4787,20 @@ namespace OpenSim.Region.Framework.Scenes
         /// <param name="applyDynamics">applies velocities, force and torque</param>
         private void AddToPhysics(bool isPhysical, bool isPhantom, bool building, bool applyDynamics)
         {
-            PhysicsActor pa;
+            if (ParentGroup.Scene != null)
+            {
+                float minsize = isPhysical ? ParentGroup.Scene.m_minPhys : ParentGroup.Scene.m_minNonphys;
+                float maxsize = isPhysical ? ParentGroup.Scene.m_maxPhys : ParentGroup.Scene.m_maxNonphys;
+                Vector3 scale = Scale;
+                scale.X = Util.Clamp(scale.X, minsize, maxsize);
+                scale.Y = Util.Clamp(scale.Y, minsize, maxsize);
+                scale.Z = Util.Clamp(scale.Z, minsize, maxsize);
+                Scale = scale;
+            }
 
+            PhysicsActor pa;
             Vector3 velocity = Velocity;
-            Vector3 rotationalVelocity = AngularVelocity;;
+            Vector3 rotationalVelocity = AngularVelocity; ;
 
             try
             {