I purchased my MacBook Pro (2.4GHz Intel Core 2 Duo; 320 GB Hard Drive) and received it last Tuesday. It was completely silent for the first couple of days (other than when I had a cd in, of course). A few days ago I started to notice that the fan is constantly on. It's not very loud; kind of like a low whirl. If I'm in class I can't hear it because of all of the background noise but if I'm sitting in a room with minimal noise I can hear it and it's bothering me because it was silent at first. I'm wondering if this is normal, or if something is wrong. I feel like I'm overreacting but come on; I just spent a ridiculous amount of money on this macbook and I'm expecting it to be perfect in every way. The only things I have changed since last week (the purchase date): Added Microsoft Office Downloaded Evernote Uploaded maybe 60 pictures I don't know. I'm debating whether or not I should take it to the apple store to get checked out. I probably will, but feedback would be great before I make the trip.