* Attempts to resolve the megaregion terrain edit rebound.

* It does this by tweaking the throttles on child agent connection to a megaregion and multiplying the land throttle by 50.  (various bit and byte magic ensue)
* While, I doubt this will cause terrain crater sized potholes.. since it actually increases the bandwidth available for land in child regions when MegaRegions area active, more testing would be good.
* This, in theory, also shouldn't cause missing objects in child regions..    because all objects are in the root region anyway.   As I said, more testing would be good.

OpenSim/Region/RegionCombinerModule/RegionCombinerModule.cs

@@ -88,7 +88,89 @@ namespace OpenSim.Region.RegionCombinerModule
         public void RegionLoaded(Scene scene)
         {
             if (enabledYN)
+            {
                 RegionLoadedDoWork(scene);
+
+                scene.EventManager.OnNewPresence += NewPresence;
+            }
+        }
+
+        private void NewPresence(ScenePresence presence)
+        {
+            if (presence.IsChildAgent)
+            {
+                byte[] throttleData;
+
+                try
+                {
+                    throttleData = presence.ControllingClient.GetThrottlesPacked(1);
+                } 
+                catch (NotImplementedException)
+                {
+                    return;
+                }
+
+                if (throttleData == null)
+                    return;
+
+                if (throttleData.Length == 0)
+                    return;
+
+                if (throttleData.Length != 28)
+                    return;
+
+                byte[] adjData;
+                int pos = 0;
+
+                if (!BitConverter.IsLittleEndian)
+                {
+                    byte[] newData = new byte[7 * 4];
+                    Buffer.BlockCopy(throttleData, 0, newData, 0, 7 * 4);
+
+                    for (int i = 0; i < 7; i++)
+                        Array.Reverse(newData, i * 4, 4);
+
+                    adjData = newData;
+                }
+                else
+                {
+                    adjData = throttleData;
+                }
+
+                // 0.125f converts from bits to bytes
+                int resend = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f); pos += 4;
+                int land = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f); pos += 4;
+                int wind = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f); pos += 4;
+                int cloud = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f); pos += 4;
+                int task = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f); pos += 4;
+                int texture = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f); pos += 4;
+                int asset = (int)(BitConverter.ToSingle(adjData, pos) * 0.125f);
+                // State is a subcategory of task that we allocate a percentage to
+
+
+                //int total = resend + land + wind + cloud + task + texture + asset;
+
+                byte[] data = new byte[7 * 4];
+                int ii = 0;
+
+                Buffer.BlockCopy(Utils.FloatToBytes(resend), 0, data, ii, 4); ii += 4;
+                Buffer.BlockCopy(Utils.FloatToBytes(land * 50), 0, data, ii, 4); ii += 4;
+                Buffer.BlockCopy(Utils.FloatToBytes(wind), 0, data, ii, 4); ii += 4;
+                Buffer.BlockCopy(Utils.FloatToBytes(cloud), 0, data, ii, 4); ii += 4;
+                Buffer.BlockCopy(Utils.FloatToBytes(task), 0, data, ii, 4); ii += 4;
+                Buffer.BlockCopy(Utils.FloatToBytes(texture), 0, data, ii, 4); ii += 4;
+                Buffer.BlockCopy(Utils.FloatToBytes(asset), 0, data, ii, 4);
+
+                try
+                {
+                    presence.ControllingClient.SetChildAgentThrottle(data);
+                }
+                catch (NotImplementedException)
+                {
+                    return;
+                }
+
+            }
         }
 
         private void RegionLoadedDoWork(Scene scene)