I have a friend who claims to shut down his computer (Start | Turn off Computer | Turn Off) and it comes back on anywhere from 30 minutes to 5 hours later.
This is a Windows XP machine.
When he turns off the machine, he turns it off... no hibernation, no standby.
The modem (it does have a phone connected to it) is not enabled to bring the computer out of standby.
Any thoughts? Ever heard of such nonsense?