Hey, I got my Macbook Alu a few weeks ago and I'm extremely happy, except for one thing, whenever I wake up the computer from sleep, the CD drive makes a kind of sound like it's loading a disc, and it's very loud. Is this normal? I don't think I've heard it on any other Macbooks. Also, whenever I move the computer around, I can hear a scratching sound from the Hard Drive. Are these two things normal? Thanks.