I have a Dell Inspiron laptop and sometimes, when I am ripping a CD, the drive makes a really loud buzzing noise and the laptop vibrates. ACcording to Dell support, this is somewhat common due to silkscreening and unbalanced discs, but most of my issues are with store bought CD's, so I can definitely rules out cheap blanks media. I can live with it as long as this isn't really hurting anything. I do notice that if I push in the left side of the CD tray, the noise quiets down a bit, so it's definitely the tray that's rattling. I also notice that if I just play the CD, there is no vibrations. I am guessing the vibrations are coming from the speed of the ripping. I would try to rip at lower speeds, but I don't see any options for that in iTunes. Maybe I'll try another Ripper and see if I can control the speed.