I received my MacBook Pro (15 inch) this morning, and so far have been very satisfied with my purchase. However, one nagging issue is getting on my nerves. When I move the computer sometimes on my lap, or when I am typing, I hear a high-pitched plinking noise (sometimes more than one). It is definitely not coming out of my speakers, and sounds as if it is coming out of the base of the laptop. I have put it on a bed and applied pressure to the corners of the machine (with the lid open), and by applying pressure to the bottom two corners (the ones furthest from the screen) I was able to replicate the sounds consistently. I would just take it to an Apple store to see what they have to say about it, but the nearest one is an incredible distance away. I am hoping that this is something I can fix on my own. If anyone could help me out I would be grateful.