ActionJakson

I've got the CCC 9.2 and have installed the vista64 hotfixes. I keep getting the BSOD after ~30min of play. Any ideas?
I just built this system a few weeks ago and have updated the bios. I'm running a saphire 4850, E7400, & Vista64. I ran Prime95 as a stability test and have seen no issuesd with it. Just the BSOD playing COH.