>>I noticed (while looking to see if there as fan control software like that I found for my Dell; didn't find any) that here have been bios and chipset updates that change the fan algorithm, so if you haven't update the bios and chipset driver, that would be a place to start.
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>The fan was full of dirt. The technical guy at the shop used a compressor to clean that up. There was a pieces of dirt which have been removed. That was it. I have been running it all afternoon and it acts normal.

I have a can of compressed air which I use to clean out the fans sometimes when things are running hot. its amazing how much crap can end up in there.

Tip is to stick something down through the fan so it doesn't get spun by the compressed air which can damage it.