So, I had like 6 UE's in a row last night, and tried restarting the game, restarting the comp, only basic processes running, rolled back my driver (because I had just updated to the new Nvidia driver when I got all the errors (I have vista hp 64bit, sp2; nvidia 9800gtx).  None of these things helped, so I shut down ventrilo and played a game, and WOW, no error....  I downloaded the x64 version of vent, so....does that have anything to do with my errors?  Please help me smart people!!