I have a MacBook, specs on signature. When I carry my MacBook (folded) and give little shakes or when walking while carrying it you could feel something loose inside. And you could definitely hear something from inside shaking. It seems it is coming from the hard drive side (bottom right corner). I've open it up before but didn't touch anything. Does yours do this? It doesn't make the machine feel very solid. /= EDIT: Oh and one more thing sometimes I could hear a light clicking noise from the hard drive now and then. Is this normal? It's quite quiet I can only hear it when there is nothing playing like music from the speakers.