only the the one series was, the newer drives are better by far, I know of 4 that have been running non-stop for several years now. I believe it was the 75gxp series. I run 85 gxp's, 80 gig's for along time now.
They haven't been "Deathstars" for many years now, it was a few certain models and the issue was identified and corrected a long time ago. No worries in buying any recent Deskstar drive.