I run Vista at home primarily for gaming purposes (and I like uTorrent). One of the problems I had with it lately was it not turning off the monitor when the power saving plan was supposed to. I would watch it try and turn off, but usually wouldn’t quite succeed. Eventually I determined the problem was having the screen saver set to activate at the same time the monitor was supposed to turn off. I set the screen saver to activate 1 minute earlier and everything is now working correctly.