Problem with MBP Keyboard Responsiveness Fixed

Apple released bout MacBook, MacBook Pro Software Update 1.1, supposed to fix a problem with keyboard responsiveness faced by many users:

This update addresses a responsiveness issue on MacBook and MacBook Pro notebook computers. Some MacBook and MacBook Pro systems may occasionally experience a temporary suspension of keyboard input which can last a minute or longer. The Mac OS X 10.5.1 update is required before installing the MacBook, MacBook Pro Software Update 1.1.