I think I may have what is referred to as the "macbook whine". It's barely audible from a normal distance from the computer, but if you put your ear on top of the left side of the keyboard (like by the D key), you can clearly hear a kind of high-pitched, staticky sound. It kind of changes in frequency as I start up more applications, so I'm pretty sure its related to the CPU. I did a google search on it, and it seems like most of the complaints are from like 2 years ago for the Macbook Pro models, so I'm not sure what's up. I'm trying to determine whether I should take it in for repair (or replacement) or not. Thanks!