Its supposed to be liquid and not ball bearing but its loud like a mother! Ok not that loud, but it makes high pitch and whine sounds. Its an 80gb 2mb cache version, D740-LX. Whenever the ide activity light goes on, there is a whine sound from the hdd. This is pretty annoying when compared to the utter silence of my seagate barracuda IV. I heard I can RMA it, but how. I don't think I can walk into staples and just say "Hey, I want to get a new one of these cause Maxtor allows RMAs" and expect it to work. Also I sent in the rebate a long time ago so I don't have the UPC barcode anymore. Can anyone help me out? Thanks.