Are you sure that the drive you have was DOA (Damaged On Arrival)?
Hard drives (and other computer parts), like everything, can sometimes come bad from the factory. Maybe the little movement it went through was enough to just prompt the errors to appear more than before.
I've been using a 3.5" Seagate Barracuda drive for about 6 months now, with no problems at all.
I did however have a couple of problems with a Maxtor drive, one of the newer FBD (Fluid Bearing Drives) ones. It wouldn't work properly in the car during the winter. Moved it inside, and put the Seagate in the car, and have had no problems with either since.