Since May 2007, Apple officially acknowledges the defect affecting some MacBook cases which can break into pieces as illustrated by the photo below:
Up to now, the top case was exchanged without much difficulty, if it was not the result of a shock.
The dedicated internal TechNote has been recently updated by Cupertino, and such top case exchange will only be limited to MacBook still covered by the warranty (legal one and extended with Apple Care).
So, think of checking the case of your MacBook is the warranty expiration date is approaching.
[translation by Linathael]
