Ok I've had this problem before but didn't think anything of it. Recently I over clocked my amd x2 6000 (3.1ghz) to 3.25. wonderful, no problems, just a switch of the fsb. Everything works perfectly. Then I notched it up to 3.35 ghz and everything still works fine. Cept for Warcraft (WoW), which now will crash with an error message within a short time of playing. I clocked back to 3.25 and its fine again. Anyone know what causes this?