i was playing a cd and then my macbook started..vibrating... is it normal? or is it not? I was really surprised when it started vibrating, I was like what the hell is going on here then i remembered i was playing a cd...this happen to anyone else?
OK, I can't resist: When I play my Latin Jazz CDs, I know *I* shake a little
Seriously: is your MB uneven? or your desk/table uneven? It could be that simple. See if you can reproduce the shake on different surfaces. If so, then you should take it in.