So the left fan of my MBP is making a buzzing sound, that I don't think it is supposed to be there. It's very hard to hear. Unless u are in a dead silent room, u will be able to hear, kind of. I told my friend about it, and he says that he can barely hear, but for some reason, it annoys the crap out of be. Here's a video I made of the noise.
http://www.youtube.com/watch?v=EDgUPPU-iSM
http://www.youtube.com/watch?v=EDgUPPU-iSM