Apple Magsafe power adapters have apparently failed at high enough rates the company is now offering to replace them free of charge, whether your MacBook (13-inch Late 2006), MacBook (13-inch), MacBook Pro (15-inch Glossy) or MacBook Pro (17-inch) is out-of-warranty or not.
Any Apple-Authorized Service Provider can make the switch for you, or you can take the adapter to the Genius bar at any Apple retail store.
Reservations recommended.