From some of the other comments on the site, I realized I had to clean it out. I took it apart as far as I could (couldn't get the whole lower chassis off), and I did use some compressed air to clean out the fan, both from the intake and the outake. Not sure how to get all the crap out of the keyboard, but that seems to be dirtiest part of all. There didn't seem to be a lot of dirt inside... at least, not in the parts I could see and get to.
Any other ideas? I'd really like this to keep running so my kids will stay off my desktop.
Edited by Tikatu, 19 May 2010 - 03:15 PM.