I just walked into the other room to check on the tape I was capturing. The tape was at it's end and Vegas was gone. There was a little message down in the lower right hand corner that said something like:
"Computer restarted after high priority update"
Freaken' Microsoft! No wonder Macs are getting so popular!
I've been bitten by this too. I've had Windows restart right in front of me while i was typing without giving me the chance to save any files i was working on. Seems like fodder for a class action suit there!
I changed the updates to the setting that downloads automatically, but waits for me to manually install them. Not only does that keep the update process at bay until i want it to, but afterwards the computer will not reboot until i say it's ok to do so. And then, when i do, i'm given notice to save open files from each application before the reboot happens.
This still has the annoyance of the little "Windows needs to restart" popup every 5 minutes. Grrrrrrrr. But at least my work is safe now.