diff --git a/OpenSim/Region/ClientStack/LindenUDP/ILLPacketHandler.cs b/OpenSim/Region/ClientStack/LindenUDP/ILLPacketHandler.cs
index b857163312..6c2678466c 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/ILLPacketHandler.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/ILLPacketHandler.cs
@@ -36,6 +36,10 @@ namespace OpenSim.Region.ClientStack.LindenUDP
     public delegate void PacketDrop(Packet pack, Object id);
     public delegate bool SynchronizeClientHandler(IScene scene, Packet packet, UUID agentID, ThrottleOutPacketType throttlePacketType);
 
+    /// <summary>
+    /// Interface to a class that handles all the activity involved with maintaining the client circuit (handling acks,
+    /// resends, pings, etc.)
+    /// </summary>
     public interface ILLPacketHandler
     {
         event PacketStats OnPacketStats;
@@ -48,8 +52,18 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         bool ReliableIsImportant { get; set; }
         int MaxReliableResends { get; set; }
 
+        /// <summary>
+        /// Initial handling of a received packet.  It will be processed later in ProcessInPacket()
+        /// </summary>
+        /// <param name="packet"></param>
         void InPacket(Packet packet);
+        
+        /// <summary>
+        /// Take action depending on the type and contents of an received packet.
+        /// </summary>
+        /// <param name="item"></param>        
         void ProcessInPacket(LLQueItem item);
+        
         void ProcessOutPacket(LLQueItem item);
         void OutPacket(Packet NewPack,
                        ThrottleOutPacketType throttlePacketType);
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
index c70163c076..3243c2f684 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLClientView.cs
@@ -4109,7 +4109,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             m_PacketHandler.InPacket((Packet) NewPack);
         }
 
-
         /// <summary>
         /// This is the starting point for sending a simulator packet out to the client.
         /// 
@@ -4185,8 +4184,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         }
 
         /// <summary>
-        /// Entryway from the client to the simulator
-        /// all UDP packets from the client will end up here
+        /// Entryway from the client to the simulator.  All UDP packets from the client will end up here
         /// </summary>
         /// <param name="Pack">OpenMetaverse.packet</param>
         public void ProcessInPacket(Packet Pack)
@@ -4483,6 +4481,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         }
                     }
                     break;
+                
                 case PacketType.RezSingleAttachmentFromInv:
                     handlerRezSingleAttachment = OnRezSingleAttachmentFromInv;
                     if (handlerRezSingleAttachment != null)
@@ -4493,6 +4492,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     }
 
                     break;
+                
                 case PacketType.DetachAttachmentIntoInv:
                     handlerDetachAttachmentIntoInv = OnDetachAttachmentIntoInv;
                     if (handlerDetachAttachmentIntoInv != null)
@@ -4505,6 +4505,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         handlerDetachAttachmentIntoInv(itemID, this);
                     }
                     break;
+                
                 case PacketType.ObjectAttach:
                     if (OnObjectAttach != null)
                     {
@@ -4520,10 +4521,9 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                             }
                         }
                     }
-
                     break;
+                
                 case PacketType.ObjectDetach:
-
                     ObjectDetachPacket dett = (ObjectDetachPacket)Pack;
                     for (int j = 0; j < dett.ObjectData.Length; j++)
                     {
@@ -4535,8 +4535,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         }
 
                     }
-
                     break;
+                
                 case PacketType.ObjectDrop:
                     ObjectDropPacket dropp = (ObjectDropPacket)Pack;
                     for (int j = 0; j < dropp.ObjectData.Length; j++)
@@ -4549,6 +4549,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         }
                     }
                     break;
+                
                 case PacketType.SetAlwaysRun:
                     SetAlwaysRunPacket run = (SetAlwaysRunPacket)Pack;
 
@@ -4557,6 +4558,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         handlerSetAlwaysRun(this, run.AgentData.AlwaysRun);
 
                     break;
+                
                 case PacketType.CompleteAgentMovement:
                     handlerCompleteMovementToRegion = OnCompleteMovementToRegion;
                     if (handlerCompleteMovementToRegion != null)
@@ -4566,6 +4568,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                     handlerCompleteMovementToRegion = null;
 
                     break;
+                
                 case PacketType.AgentUpdate:
                     if (OnAgentUpdate != null)
                     {
@@ -4594,6 +4597,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         //agenUpdate.AgentData.ControlFlags, agenUpdate.AgentData.BodyRotationa);
                     }
                     break;
+                
                 case PacketType.AgentAnimation:
                     AgentAnimationPacket AgentAni = (AgentAnimationPacket)Pack;
 
@@ -4620,6 +4624,7 @@ namespace OpenSim.Region.ClientStack.LindenUDP
                         }
                     }
                     break;
+                
                 case PacketType.AgentRequestSit:
                     if (OnAgentRequestSit != null)
                     {
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLPacketHandler.cs b/OpenSim/Region/ClientStack/LindenUDP/LLPacketHandler.cs
index 7b102ecf13..97d75e12ed 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLPacketHandler.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLPacketHandler.cs
@@ -524,7 +524,8 @@ namespace OpenSim.Region.ClientStack.LindenUDP
             else if (packet.Type == PacketType.StartPingCheck)
             {
                 StartPingCheckPacket startPing = (StartPingCheckPacket)packet;
-                CompletePingCheckPacket endPing = (CompletePingCheckPacket)PacketPool.Instance.GetPacket(PacketType.CompletePingCheck);
+                CompletePingCheckPacket endPing 
+                    = (CompletePingCheckPacket)PacketPool.Instance.GetPacket(PacketType.CompletePingCheck);
 
                 endPing.PingID.PingID = startPing.PingID.PingID;
                 OutPacket(endPing, ThrottleOutPacketType.Task);
diff --git a/OpenSim/Region/ClientStack/LindenUDP/LLPacketServer.cs b/OpenSim/Region/ClientStack/LindenUDP/LLPacketServer.cs
index 5fd36195d2..9f8383c24d 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/LLPacketServer.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/LLPacketServer.cs
@@ -36,6 +36,10 @@ using OpenSim.Framework.Communications.Cache;
 
 namespace OpenSim.Region.ClientStack.LindenUDP
 {
+    /// <summary>
+    /// This class sets up new client stacks.  It also handles the immediate distribution of incoming packets to
+    /// client stacks
+    /// </summary>
     public class LLPacketServer
     {
 //        private static readonly log4net.ILog m_log
@@ -185,9 +189,6 @@ namespace OpenSim.Region.ClientStack.LindenUDP
         public virtual void CloseCircuit(uint circuitcode)
         {
             m_networkHandler.RemoveClientCircuit(circuitcode);
-
-            // XXX: Why is this commented out?  Possibly because close mechanisms are so tangled right now
-            //m_scene.ClientManager.CloseAllAgents(circuitcode);
         }
 
         /// <summary>
diff --git a/OpenSim/Region/ClientStack/LindenUDP/Tests/PacketHandlerTests.cs b/OpenSim/Region/ClientStack/LindenUDP/Tests/PacketHandlerTests.cs
index 305a62059f..ac5175cc98 100644
--- a/OpenSim/Region/ClientStack/LindenUDP/Tests/PacketHandlerTests.cs
+++ b/OpenSim/Region/ClientStack/LindenUDP/Tests/PacketHandlerTests.cs
@@ -27,7 +27,9 @@
 
 using Nini.Config;
 using NUnit.Framework;
+using NUnit.Framework.SyntaxHelpers;
 using OpenMetaverse;
+using OpenMetaverse.Packets;
 using OpenSim.Framework;
 using OpenSim.Region.ClientStack.LindenUDP;
 using OpenSim.Tests.Common.Mock;
@@ -63,7 +65,11 @@ namespace OpenSim.Region.ClientStack.LindenUDP.Tests
             AgentCircuitManager acm;
             SetupStack(new MockScene(), out testLLUDPServer, out testLLPacketServer, out acm);
             
-            new LLPacketHandler(new TestClient(agent), testLLPacketServer, new ClientStackUserSettings());
+            ILLPacketHandler packetHandler 
+                = new LLPacketHandler(new TestClient(agent), testLLPacketServer, new ClientStackUserSettings());
+            
+            packetHandler.InPacket(new AgentAnimationPacket());
+            //Assert.That(Is.Not.Null(packetHandler.PacketQueue.Dequeue()));
         }
         
         /// <summary>
diff --git a/OpenSim/Tests/Common/Mock/TestClient.cs b/OpenSim/Tests/Common/Mock/TestClient.cs
index b5d6f6b311..41c2eb664d 100644
--- a/OpenSim/Tests/Common/Mock/TestClient.cs
+++ b/OpenSim/Tests/Common/Mock/TestClient.cs
@@ -343,6 +343,14 @@ namespace OpenSim.Tests.Common.Mock
             set { }
         }
         
+        private uint m_circuitCode;
+
+        public uint CircuitCode
+        {
+            get { return m_circuitCode; }
+            set { m_circuitCode = value; }
+        }        
+        
         /// <summary>
         /// Constructor
         /// </summary>
@@ -753,14 +761,6 @@ namespace OpenSim.Tests.Common.Mock
         {
         }
 
-        private uint m_circuitCode;
-
-        public uint CircuitCode
-        {
-            get { return m_circuitCode; }
-            set { m_circuitCode = value; }
-        }
-
         public void SendBlueBoxMessage(UUID FromAvatarID, String FromAvatarName, String Message)
         {