Is anyone else experiencing a very annoying electrical noise or whine coming from their 13" unibody pro? Mine is about a month old and has gone from very quiet to so annoying I have to play music sometimes to not hear it. It only seems to happen when the charger is plugged in and the computer is idling. If I open a program it gets quiet while loading. If I just move the mouse around the screen, however, it gets very loud! I don't know what to do. I'm a couple hours from the nearest Apple store and if I make the drive I have a feeling they wont be able to hear the noise in the store. Is this normal?!?