I just bought this 60 gig drive and have noticed that when the head is reading from the disk the noise is noticeable. What could be described as normal and what would be enough to return the drive to the store for a new one? Also i tried to set the drive to ATA66, my mb supports ATA 66, but the program I used only gives an error message when I select the speed and press enter. Who has an opinion on these WD drives. Are these drives prone to giving trouble? Maybe a Maxtor would have been a better choice? I based this purchase on the review given to larger capicity WD1000BB which tested well.