So how common is the vibration from your 7200 rpm drive? I just got my new MBP 2.8 with the 320GB/7200 rpm drive, and it vibrates the unibody all the time. I am wondering if I made a mistake by going with the faster drive. I am not sure the speed gain is worth it, if the trade off is vibration. I have taken off the cover and can feel the vibration is coming from the drive (which has a little slight play to the mount). This not an electrical ground issue, but a mechanical vibration. Even though slight, it's somewhat annoying and it can be felt on the track pad as well. So does everybody with a 7200 rpm drive feel the same physical vibration I am talking about?