I tried cleaning my CPU fan the last time I was in the box, but it was next to
impossible.  I did the best I could, but the canned air made me feel like it was
forcing dust into the CPU from its fan.   I stopped that right away.  Wouldn't a
brush, or just about anything, force dust into the CPU?
Carol Hanson

My fans were filthy.  I would suggest anyone with any type of "odd"
problem to go look at their fan(s)...
 OR, you could do it now as prevention...
(I changed the NorthBridge fan to ballbearing while I was there...)

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