Flash back!
Well, I believe the problem was overheating protection kicking in. The back fan on the computer was jammed and no longer spinning (and boy was that fan hot). The fan's was connected to one of the motherboard's fan power pins. I replaced that tinny fan, and I haven't had any reboot problems.
I assume that this is just the CPU overheating protection that is listed in the BIOS, but my assumption is that it would cause an immediate hard power off. Why was I getting shutdown listings in the message log?
Weird.
Kenneth
.===================================. | This has been a P.L.U.G. mailing. | | Don't Fear the Penguin. | | IRC: #utah at irc.freenode.net | `==================================='
