ok,perhaps my little buggt experience can help some folks.when playing Arma2 and OA i got the nerving CTD but the game still ran in task manager.i was looking everything (different drivers,formatted twice etc).then i got a idea when i read somewhere it could be the heavy gpu load or something like this.
btw i have a overclocked gtx 295 (which is OC by the manufacturer)...so i saw the gpu runs at 630 MHZ,with Rivatuner i "downclocked" first at 600 and nothing,still the bug, so me still very :mad:....so i downclocked again at 550 MHZ...and now it works without that bug again,can play hours and hours.....
hope it can help someone not to search 2 weeks like me...........