Well, the last time i recived that Bug, my GPU Temp was 75°C ... i dont know but that isnt sooooo high right? Well, I didnt had those probs with ArmA 1 but i had a ATI in that times... Well i just save and restart... but it is starting to pissing me off now^^
Lets pray for a new patch soon!
Or may a new driver update will solve this too... :-/