For the last 6 months it was giving me trouble burning cd's. They wouldn't play right in my car, and now I think I know why. When I put cd's in the drive now, the cd-rom sounds like it is working itself to death, and never mounts the cd. If I tilt the laptop away from me, it gets worse, and if I tilt it towards me, it gets better, and will even read the cd at times. Is this type of hardware failure normal for a mac? I treat my macbook very well, and rarely have I used the cd-rom. It worries me that something else more critical may die as well.