I am fetting frustrated with Windows as well. I can't stand the fact that they restart my machine whenever they feel like it.
My desktop has lots of pages open. It's cluttered but that's the way I like it. When MS Windows XP Pro decides to reboot over night, it's like someone came in and cleaned my desk and put everything away or threw it away.
Then I have to search the history listing to see what I had opened last but but it's a pain because it shows a trail of my web surfing.
Is there any way to get Microsoft to keep their hands off my Desktop? Or at least put it back the way it was?
Try taking your case off and (sorry for the obnoxious Clintonian image) giving your machine a blow-out with some of that canned air. If you see dust clouds, check your vents and fans (especially around the graphics card). I use a small artist's paintbrush to fine-tune the cleaning. Just stay away from static dusters. And don't forget to ground yourself by keeping in contact with the metal parts of the computer case frame.