Seagate HDD replacement programme
Just spoke to Apple care and mine is currently in for the replacement.
I was curious to see what they are replacing it with and it wll be another Seagate, essentially like for like.
All they are saying the Seagate's had a faulty batch and that the new one should be fine.
iMac (27-inch Late 2009), OS X Mountain Lion (10.8.2)