I have a 4 month old powerbook which seems to have a problem. I first noticed this when I was cloning my whole HD to an external device using SuperDuper - about half way through I started to hear an intermittent high pitched beep from under the trackpad, once the clone had completed the beeping stopped. Now I have since learnt that this is where the HD sits (under the trackpad) I have run disk utility from a boot disk and the SMART status is 'verified' so what's going on? Further info. that might be of help is that when it started to beep last night I get the spinning beachball and the OS freezes for the duration of the beep. This fault only seems to be occuring when the system is under heavy load, otherwise I have a happy powerbook! Has anyone had a similar problem - is my HD on the way out???