Yesterday our server decided to shut down at 5 AM. We have a spare. Just hadn't set it up yet to step into place all-of-a-sudden. Turns out that the power supply, which has three fans, detected that fan #1 is not working. So to protect the rest of the computer ... it shut down.
So I fedexed the power supply from our backup server to the web host that we're using because Compaq couldn't get their act together and help me .. despite many wasted hours on the phone with them. Turns out that they have had persistent problems with this power supply. Hmm.
Soo .. Sorry about the blackout .. and thanks for your patience.