Hi there, just wondering if you guys could shed a little light on my situation. The left fan in my 15 inch 2.16Ghz Intel Core 2 Duo died, so I bought a replacement and fitted it myself. Before I put everything back together, I turned it on and checked the fan started spinning, and it did. Even now, when I turn it on I can hear the replacement fan spinning, so it's definitely working. Last night, whilst watching a film, the bottom of the macbook got REALLY hot, too hot to even touch, then it kernel panicked and turned off. So I installed iStat and it shows the left fan as running at 0rpm, even though I can hear it running and feel a slight blow. It just doesn't seem to be winding up when the mac gets too hot like the right hand fan does? Anyone got any ideas? Thanks in advance and kind regards, James.