Here's a reply to a rather old post. Dude, the HDD died. Apple doesn't make HDDs. The HDD manufacturers are Seagate, Western Digital, Hitachi GST, Toshiba, Fujitsu, and Samsung. Blame one of those guys. I'm no Apple fanboy since they make their stuff in China, I just want to set the record straight. Incidentally, I work for one of the above companies as an engineer -- some of the other manufacturers have rather low quality standards. Now it's possible the heat management on Apple's laptops is less than wonderful. Still, it should be within the environmental spec on the HDD.
Actually, I was searching for "fuck apple" to find legitimate horror stories. Unfortunately, I'll have to keep searching. ;-)