Vista 64 burps
Today the machine developed a habit of simply rebooting for no reason. No blue screen, nothing in the event logs. Just like someone had pushed the "reset" button. Reboot is smooth and without incident or warning box. Did it twice, that I know of.
Of course, if IE is up at the time, the history file goes to pot and all the Zone posts go blue on me. If I miss a new message, sorry!