Act2 Hell Staff Problem

[shavenlunatic]

I've never had this problem before but I have a clvl72 Barb in Act2 Hell and i got the staff + amu, tried to cube them and it just didnt do anything. Started a new game and the same happened again so I dropped the staff and the amu and went into an act2 game running, partied through the maggot lair, got the staff and the quest changed to "Use the cube to restore the staff" but I didnt have the amu...? Then a staff and amu appeared on the floor so i tired to pick them up.. "I can't" then the game lagged out (dont know if that's related but seemed a bit strange)

Anyway, I'm playing on Closed Bnet none-ladder SC.

Sorry if this is in the wrong section but im not sure if it's a known bug or just something strange... any ideas?