Every drive maker, IBM/Hitachi, HP, Seagate/Maxtor, WD, Sony, Toshiba, Fujitsu, Samsung, etc, have ALL put out lines of lemon-drives in the past 5 years.
IBM got so much press on the early runs of their 2nd gen Deskstars because people expected so much from their products. IBM to their credit jumped on the problem and put in an agressive warrenty replacement program. Hitachi carries this program forward today.
Sony on the other hand, suffers no such expectations and thus gets no bad rep for what is truly a piss-poor line of disk drives.