Heh, I have 3 939 boards. The Abit AV8, Asus A8V, and the GB K8N. I've run memtest on my corsair 3200 modules with my Asus mobo, and they ran with no errors.
Anyway, last night I went into BIOS and changed the Max memclock to 166 (from 200). I started Prime95 and it ran 5 hours before it...