I have a Macbook Pro I got around October of 2006. A few months ago I noticed the left fan was making a really loud noise. It's still running at the normal rpm around 2,000; but, it's loud now, almost a clicking type noise. When I put pressure on the underside of the laptop the noise stops and the rpm goes down to 0. Must be the fan making contact with something then I suppose? Any suggestions, should I take it apart and look inside? This noise only happens once in a while too.