I just built this killer rig with a xp 3000 400fsb and 512 mb 128bit memory with an radeon 9800 in a xaser III case. The problem I am having is that after about ten to twenty minutes, it freezes up, whether idle or in a game, it doesn't matter. It completly freezes and wont respond to the power button, only reset, and then I just get a black screen. I have to unplug the thing, and wait a few minutes before I plug it in to get it to boot up and such. It sounds like a heat problem, but with the xaser I didnt think that would be a Problem. My temps right now at idle are 57 on the cpu and 41 for the system(celsius). I have a thermaright sk7 and a vantec tornado on the cpu. It seems like thats a hot temp, yet not hot enough to freeze it up is it?