I'm just posting to get a little feedback from other users as to whether my new MBP has an oversensitive sudden motion sensor - I have the stock 250GB 5400RPM hard drive, but I've noticed that if I lift the laptop (it doesn't have to be that sudden a lift), I will hear a 'clunk' where the Hard Drive is located - I'm assuming that the change in acceleration has told it to park the heads. However, it does seem a little sensitive, especially as I'm only lifting it about two feet from where it was sitting onto my lap. Has anyone else noticed this, or might it be a fault with my particular machine? Also, would changing the HDD fix this problem or is it something that's part of the machine itself? Thanks for the help.