Ever sit down to your computer which had some stuff running only to find you’re at the login screen (and not just the screensaver password prompt screen)? Did you lose some work? I have!
No easy option to change this, but it IS changeable.
Great blog post here about it:
http://softwarex-nz.blogspot.com/2008/01/stop-vistas-update-auto-reboot.html
Thank you!