Thanks for the reply.
Well, I dont think it is the drive. 2 out of 3 times I get the sound for about 10 second during start up. Just ran Techtool Pro 4 which didn't find anything.
If you ever listened to a tv that is about to die, it sounds like a component buzzing rather than a HD being stuck.
Very weird that my b key now feels like it is almost stuck which was not the case earlier.
Btw, the sound comes from the the left side of the machine, more so the top left.
Any more ideas? Or how I can check it?
Thanks
/Peter