Holy cow, this thread is still going?!
I'm kind of feeling like a proud papa here :)
With that, here's my updated list (updates in bold):
Intel 386 DX 25MHz
Intel Pentium 90MHz
Intel Celeron 733MHz
Athlon XP 2600+ @ Stock
Athlon XP 3000+ @ Stock
Athlon X2 4200+ @ Stock
Intel Core2Duo e6300 @...
I've had 3 OCZ Gold PSU's and they have all sucked. For whatever reason, they work for about a week, then just stop functioning. PSU tester shows no issues, but they won't power any computer.
Swapping out to a spare CoolerMaster psu proved the issue to be the OCZ psu's not the comptuers...