Ok, that makes more sense. SilentPCReview gave it good marks for noise levels. See page 4 in this review.http://www.silentpcreview.com/article1076-page1.html
Well, if it's noiser than a barracuda, something may be wrong. If you're not happy with it and it's under warranty, I'd just make an image of the drive then send it in for an exchange. Now you can restore the image to the new drive and be done.