I'm currently using a Vostro 1500 which I will have to be sticking by for another few months. Although it does run very hot easily reaching 90 degrees on both cores. I figured part of the reason is the dust that's accumulated in the 2 and a bit years of usage, especially that it is turned on a lot, lets say an average of 12h a day over that time. I was thinking of taking the back cover off and using a compressor on low pressure to blow the dust out. I heard that using a hoover would create static so I guess that's not an option. Any other ideas how I should go about this?