After about 6 months of my computer running hotter than normal and causing odd things to happen when I put switched to the 9600m gt (random game black screen freezes), i decided yesterday to dust out the inside thanks to many articles found online. After taking off both fans, I was shocked to see an insane amount of buildup of dust - like a huge chunk - covering both fans completely. Needless to say my computer is now running much cooler - a drop from average 70-80C to 40C. If your computer is hot, i would definitely recommend doing this. It was a very easy process (8 screws for the backside and 3 for each fan).