Due to an unusually high number of hard drive failures with 13” MacBooks purchased between May 2006 and December 2007, Apple is offering a MacBook Repair Extension Program.  Through this program, Apple will replace failed drives for free if the MacBook is out of warranty (or reimburse you if your drive has already failed and you paid Apple to replace it).  This offer is good for 3 years from date of purchase, and expires 8/15/2010.  More details: http://www.apple.com/support/macbook/hd/repairextension/