The main channel is getting an update today. It is the server maintenance package that ran on all 3 release candidate channels last week. This is the package with the new object return scripting functions, the Pathfinding change to keep characters within a parcel, fix rendering of neighboring regions, and another fix for the HTTP-in-bound connection problems.
The release candidate channels will all get the same new server maintenance package tomorrow, Wednesday.
This package includes a fix to llApplyImpulse, which is/was only working in the root prim. If used in a child prim, it would work after the script was compiled in-world, meaning while the containing object is rezzed. If the object has the script and is rezzed from inventory, it fails.