Hi, I have a 12" 867mhz powerbook with the standard 40gb hard drive. About a week ago I noticed it was making a noise that I had heard elsewhere. I would say it sounds like a 'dink' and it happens at regular intervals when I am not accessing anything. I'd say it happens every 10 seconds or so. It's very quiet and it doesn't always continue to make the sound. The reason I am concerned is that I had a hard drive in my pc a couple years back make a similar sound for a month or so before it failed and would not boot. The drive was still accessible as a secondary drive, at least once or twice, but I never used it after that. Should I expect the same thing from my powerbook drive? Does anyone have any suggestions? Thanks for your help, these boards have been very helpful in the past even though this is the first problem I have posted myself. I have had this computer for about 14 months just in case that helps, and I am the original owner.