I have read this entire thread and I have to say, it's hard to believe moving the head should cause that much noise. It is considerably louder than a random head seek. My "cat meow" is pretty darn LOUD. All drive manufacturers have this feature and none of the other ones even come close to the decibal level of this sound. Yes, the drive rocks, but I think it was important for IBM/Hitachi to come back strong after the DeathStar drive issues. A LOUD strange drive noise that comes out of no other drive doesn't give me a lot of confidence. I'll be backing up my drives daily. I am really hoping that with enough complaints to Hitachi, perhaps they can improve this issue with a firmware upgrade.