This update addresses a responsiveness issue on MacBook and MacBook Pro notebook computers.

On some MacBook and MacBook Pro systems the users may occasionally experience a temporary suspension of keyboard input which can last a minute or longer.

The Mac OS X 10.5.5 update is required before installing the MacBook, MacBook Pro Software Update 1.2.

What's New in This Release: [ read full changelog ]

· This update contains software bug fixes for precision aluminum unibody enclosure MacBook and MacBook Pro notebook computers introduced in October 2008.
· The update improves compatibility with external displays and includes a variety of software fixes. This update is recommended for all users of these systems.