Empathy with machinery, particularly computers...

[Mister Obvious]

That's something everybody should do.
You have to shut your machine down and let it rest for about half an hour.
Then, using a can of compressed air, blow/shoot quick bursts of air into all
the holes, nooks and cranny's. You'll be surprized at how much black dust 
comes out. Especially if you've never done it before.

It's gotta be the right stuff though, made for computers. It'll come with a super
thin clear plastic straw to stick into the nozzle, like WD-40.

Yeah I found some from Office Max, it has "electronics" on the label. I will totally do this sometime within the next month or two...