If an agent is logging in, rather than teleporting, make sure all known

circuits for that agent are closed.

OpenSim/Region/CoreModules/Framework/Caps/CapabilitiesModule.cs

@@ -139,6 +139,14 @@ namespace OpenSim.Region.CoreModules.Framework
                 {
                     Caps oldCaps = m_capsObjects[circuitCode];
 
+                    // Remove tge handlers. They may conflict with the
+                    // new object created below
+                    oldCaps.DeregisterHandlers();
+
+                    // Better safe ... should not be needed but also 
+                    // no big deal
+                    m_capsObjects.Remove(circuitCode);
+
 //                    if (capsObjectPath == oldCaps.CapsObjectPath)
 //                    {
 //                        m_log.WarnFormat(

OpenSim/Region/Framework/Scenes/Scene.cs

@@ -3988,6 +3988,12 @@ namespace OpenSim.Region.Framework.Scenes
                 // We need the circuit data here for some of the subsequent checks. (groups, for example)
                 // If the checks fail, we remove the circuit.
                 acd.teleportFlags = teleportFlags;
+
+                // Remove any preexisting circuit - we don't want duplicates
+                // This is a stab at preventing avatar "ghosting"
+                if (vialogin)
+                    m_authenticateHandler.RemoveCircuit(acd.AgentID);
+
                 m_authenticateHandler.AddNewCircuit(acd.circuitcode, acd);
 
                 land = LandChannel.GetLandObject(acd.startpos.X, acd.startpos.Y);