Mantis#1496. Thank you kindly, Melanie for a patch that:

Adds full implementation of all llDetected* functions for sensors, 
collisions and touches. Adds changed(CHANGED_REGION_RESTART) event 
to allow restarting of eye-candy functionality not currently 
persisted with the prim.

OpenSim/Region/ScriptEngine/XEngine/AsyncCommandPlugins/SensorRepeat.cs

@@ -324,6 +324,7 @@ namespace OpenSim.Region.ScriptEngine.XEngine.AsyncCommandPlugins
                     {
                         detect[idx] = new XDetectParams();
                         detect[idx].Key=(LLUUID)(SensedObjects.Data[idx]);
+                        detect[idx].Populate(m_CmdManager.m_ScriptEngine.World);
                     }
 
                     m_CmdManager.m_ScriptEngine.PostScriptEvent(ts.itemID,