I just bought a new MacBook Pro the beginning of August and have noticed an odd noise coming from the computer when I move it certain ways. It makes an odd metallic clunk-type noise. (I have owned many laptops in the past and have never heard a noise like this.) It almost sounds like something is loose and is bumping against something inside the computer. It is not a noise related to when it is running. Thoughts? Return it? Worried something might happen down the road...