Yeah, so i get this Archeology cd, which costs like 100 bucks for uni, and i put it in my powerbook (look at sig), and it makes this really really loud noise. I tried other cds and it doesn't make the noise. It goes to its highest speed, then goes faster, and the whole pb vibrates, and makes this awful sound. What do i do? it reads the cd, but i'm afraid to install it. Help!