So my Macbook Pro unibody from late 2009 is making this weird noise whenever it is on. It used to do it once it was working too hard, but now it starts as soon as the computer opens. I recorded the sound and you can hear it HERE. Even when there are no applications running, it still seems overworked. This is what it sounds like with just Firefox going, and fans at 4734 rpm (says iStat Nano). If there is any other information you guys need to help I'll gladly oblige. Thanks!