Apple has issued a recall of some of its hard drives that were put inside some of its iMac PCs. A page on Apple's web site has the details of the recall which affects iMacs that were sold between May and July of 2011. The hard drives that are affected are the 1 TB drives made by Seagate. The faulty drives were put into the 21.5 inch and 27 inch versions of the iMac PCs. According to News.com the drives could fail "under certain conditions" but there's no word on exactly what the issue is with these drives.
Apple is currently sending emails to the owners of the affected iMacs who registered their PCs with the company. However for people who did not register their iMacs you can check to see if your PC is part of the recall order by putting in your iMac serial number on the recall page. This web site shows how to find the serial number on the iMac.
If you own an iMac and your PC is among those with the faulty hard drive you can go to a Apple store to have it fixed. You can also go to an authorized Apple service provider or contact Apple's technical support for more information. Apple does recommend that the hard drive in the affected iMac be replaced "as soon as possible." The company will replace the hard drives for free until July 22, 2012. This special recall will not be an actual extension of Apple's normal warranty plan for the iMac.