This is hard to describe but I've had my C2D mbp for about two weeks now and I just noticed that when I have the screen open as far as it will go and I'm working with the computer on any sort of uneven/mobile surface (i.e. my lap, or like an airplane tray table) if the computer gets jostled it causes a distinct clicking/popping noise on the back left corner, where the magsafe adapter plugs in. It almost sounds like something sliding against something else but I've inspected it all over that corner and can't find the issue. It does it with or without the power adapter and seems to have no effect on performance but it is noticable enough that I first heard it while I had headphones in with music playing. Is this something I should have the apple store look at or is there nothing I can do? Thanks.