I flashed my motherboard (a previously flakey ABIT KR7A-RAID) BIOS before the reformat and *knock on wood* it hasn't crashed yet! I'm very impressed.

The only strange thing that has happened so far was when I was running Mozilla and Eclipse at the same time. I got a low virtual memory warning (that I have never received before) and Mozilla started chewing up memory ... and it got to around 85MB before I could stop it in the task manager.