I got version 5.0.0.034 here and I decided to play a lil with it, it's sunday after all.
After I finished messing around, I built the alx/cod and installed with DM. Media Key is now working like the menu key. I built it for 5.0 OS and I am running 5.0.0.411 here.
Could anyone with Theme Builder and a 8520 give this a try and see what's up?