FYI - Apple is having more battery trouble:
Apple Inc. said on Friday some batteries in its MacBook and MacBook Pro notebook computers may have performance problems, but they do not pose a safety risk.
Apple said problems with affected batteries include not charging when the computer is plugged into an outlet.
The issue affects batteries in MacBook and MacBook Pro notebooks sold worldwide between February 2006 and April 2007.
You can relax though as this isn't a safety issue, so there's no risk of the battery going supernova on your lap or anything.
Details of the battery replacement program can be found at http://www.apple.com/support/macbook_macbookpro/batteryupdate/.