I posted a couple months back about an issue I was having in which I was getting BSOD's nearly every hour, on the hour. A simple CMOS reset cured the problem, but since that time it's been all I want to get within 200mhz of where I was stable before. Figured I'd try some other BIOS versions but that didn't change anything. Is it possible there is an underlying corruption of XP from the blue screens that is limiting the overclock?