Hmmm... I really begin to wonder if there is a common chipsetmemory typeCPU errata related to all of this. Possibly even specific manufacturers. So far I haven't had any lockups using P4 light sets (and I tried), or a 2-3 hour seppuku event, either. Most I ever saw was one C exception with the DAZ MilDragon (and the screen refesh slowdown with added characters. That is annoying) Or.... Here's something. A lot of people who seem to have trouble are using P4's. I've heard and seen very few AMD user issues by comparison. And of those users, the CPU freq range seems to be mainly in the 1.4 to 2 gigahertz spread. Wasn't that when Intel was pushing the chip to get ahead of AMD again? And there was a redesign of the form factor in that window; actually 2 that I recall, that effectively created little ghetto's. Whatever chip you had was it; you couldn't upgrade to a new one due to pin count incompatibility and chipset support. There was also the fact that many of the name motherboards found a supplier of electrolytic capacitors that had essentially stole part of the design from another company....and not the really important part. Abit, Asus, and FIC I know had good boards that went flakey after a time, due to the capacitor farm degrading. And of the people in the P4 camp having trouble...what -kind- of memory does your system use? If it is RIMMs, there may be an issue there. If it is one of those transition boards, where they tacked PC-133 SDRAM onto the thing using a less than perfected memory controller, that could be it as well. There are stability issues no question...but there also seems to be some common hardware issues that might have some bearing on this, as well.