diff --git a/OpenSim/Region/OptionalModules/UserStatistics/Clients_report.cs b/OpenSim/Region/OptionalModules/UserStatistics/Clients_report.cs
index 4a6f7bea8d..3f36e32834 100644
--- a/OpenSim/Region/OptionalModules/UserStatistics/Clients_report.cs
+++ b/OpenSim/Region/OptionalModules/UserStatistics/Clients_report.cs
@@ -97,9 +97,8 @@ namespace OpenSim.Region.UserStatistics
                     sdr.Read();
                     totalregions = Convert.ToInt32(sdr["regcnt"]);
                 }
-
                 sdr.Close();
-                sdr.Dispose();
+                cmd.Dispose();
 
                 sql =
                     "select client_version, count(*) as cnt, avg(avg_sim_fps) as simfps from stats_session_data group by client_version order by count(*) desc LIMIT 10;";
@@ -120,7 +119,7 @@ namespace OpenSim.Region.UserStatistics
                     }
                 }
                 sdr.Close();
-                sdr.Dispose();
+                cmd.Dispose();
 
                 if (totalregions > 1)
                 {
@@ -143,11 +142,8 @@ namespace OpenSim.Region.UserStatistics
                         }
                     }
                     sdr.Close();
-                    sdr.Dispose();
-
-
+                    cmd.Dispose();
                 }
-
             }
             
             foreach (ClientVersionData cvd in cliRegData)
@@ -163,9 +159,6 @@ namespace OpenSim.Region.UserStatistics
                 {
                     regionTotals.Add(cvd.region_id, cvd.count);
                 }
-                
-                
-
             }
 
             modeldata["ClientData"] = clidata;
diff --git a/OpenSim/Region/OptionalModules/UserStatistics/Default_Report.cs b/OpenSim/Region/OptionalModules/UserStatistics/Default_Report.cs
index fabe3d4632..8745acd0bb 100644
--- a/OpenSim/Region/OptionalModules/UserStatistics/Default_Report.cs
+++ b/OpenSim/Region/OptionalModules/UserStatistics/Default_Report.cs
@@ -227,7 +227,10 @@ TD.align_top { vertical-align: top; }
                     returnstruct.avg_client_mem_use = Convert.ToSingle(sdr["sav_mem_use"]);
 
                 }
+                sdr.Close();
+                cmd.Dispose();
             }
+            
             return returnstruct;
         }
 
diff --git a/OpenSim/Region/OptionalModules/UserStatistics/Sessions_Report.cs b/OpenSim/Region/OptionalModules/UserStatistics/Sessions_Report.cs
index 0e94912ee4..74e9c66e57 100644
--- a/OpenSim/Region/OptionalModules/UserStatistics/Sessions_Report.cs
+++ b/OpenSim/Region/OptionalModules/UserStatistics/Sessions_Report.cs
@@ -145,8 +145,7 @@ namespace OpenSim.Region.UserStatistics
                     }
                 }
                 sdr.Close();
-                sdr.Dispose();
-                
+                cmd.Dispose();               
             }
             modeldata["SessionData"] = lstSessions;
             return modeldata;
diff --git a/OpenSim/Region/PhysicsModules/Ode/OdeScene.cs b/OpenSim/Region/PhysicsModules/Ode/OdeScene.cs
index 8f9bccb489..7021a0527f 100644
--- a/OpenSim/Region/PhysicsModules/Ode/OdeScene.cs
+++ b/OpenSim/Region/PhysicsModules/Ode/OdeScene.cs
@@ -3452,6 +3452,11 @@ namespace OpenSim.Region.PhysicsModule.ODE
             }
         }
 
+        private int compareByCollisionsDesc(OdePrim A, OdePrim B)
+        {
+            return -A.CollisionScore.CompareTo(B.CollisionScore);
+        }
+
         public override Dictionary<uint, float> GetTopColliders()
         {
             Dictionary<uint, float> topColliders;
@@ -3459,7 +3464,7 @@ namespace OpenSim.Region.PhysicsModule.ODE
             lock (_prims)
             {
                 List<OdePrim> orderedPrims = new List<OdePrim>(_prims);
-                orderedPrims.OrderByDescending(p => p.CollisionScore);
+                orderedPrims.Sort(compareByCollisionsDesc);
                 topColliders = orderedPrims.Take(25).ToDictionary(p => p.LocalID, p => p.CollisionScore);
 
                 foreach (OdePrim p in _prims)
diff --git a/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs b/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs
index 623e6bedcc..fc08819376 100644
--- a/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs
+++ b/OpenSim/Region/PhysicsModules/ubOde/ODEScene.cs
@@ -30,6 +30,7 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Reflection;
 using System.Runtime.InteropServices;
 using System.Threading;
@@ -803,14 +804,6 @@ namespace OpenSim.Region.PhysicsModule.ubOde
                 return;
             }
 
-            // update actors collision score
-            if (p1.CollisionScore >= float.MaxValue - count)
-                p1.CollisionScore = 0;
-            p1.CollisionScore += count;
-
-            if (p2.CollisionScore >= float.MaxValue - count)
-                p2.CollisionScore = 0;
-            p2.CollisionScore += count;
 
             // get first contact
             d.ContactGeom curContact = new d.ContactGeom();
@@ -1056,6 +1049,12 @@ namespace OpenSim.Region.PhysicsModule.ubOde
         {
             uint obj2LocalID = 0;
 
+            // update actors collision score
+            if (p1.CollisionScore < float.MaxValue)
+                p1.CollisionScore += 1.0f;
+            if (p2.CollisionScore < float.MaxValue)
+                p2.CollisionScore += 1.0f;
+
             bool p1events = p1.SubscribedEvents();
             bool p2events = p2.SubscribedEvents();
 
@@ -2569,27 +2568,22 @@ namespace OpenSim.Region.PhysicsModule.ubOde
             }
         }
 
+        private int compareByCollisionsDesc(OdePrim A, OdePrim B)
+        {
+            return -A.CollisionScore.CompareTo(B.CollisionScore);
+        }
+
         public override Dictionary<uint, float> GetTopColliders()
         {
-            Dictionary<uint, float> returncolliders = new Dictionary<uint, float>();
-            int cnt = 0;
-            lock (_prims)
-            {
-                foreach (OdePrim prm in _prims.Values)
-                {
-                    if (prm.CollisionScore > 0)
-                    {
-                        returncolliders.Add(prm.LocalID, prm.CollisionScore);
-                        cnt++;
-                        prm.CollisionScore = 0f;
-                        if (cnt > 25)
-                        {
-                            break;
-                        }
-                    }
-                }
-            }
-            return returncolliders;
+            Dictionary<uint, float> topColliders;
+            List<OdePrim> orderedPrims;
+            lock (_activeprims)
+                orderedPrims = new List<OdePrim>(_activeprims);
+
+            orderedPrims.Sort(compareByCollisionsDesc);
+            topColliders = orderedPrims.Take(25).ToDictionary(p => p.LocalID, p => p.CollisionScore);
+           
+            return topColliders;
         }
 
         public override bool SupportsRayCast()