Apple has posted updates for its Mac Pro lineup and its MacBook Air. The first addresses issues for users of ATI Radeon 2600 XT graphic chips while the second provides better fan management.

ATI Radeon HD 2600 XT Firmware Update (792KB)

This update is for Mac Pro computers with one or more ATI Radeon HD 2600 XT graphics cards installed, running Mac OS X 10.5.2 or later with the Leopard Graphics Update.

It updates the ATI Radeon HD 2600 XT graphics card firmware on all of the ATI Radeon HD 2600 XT graphics cards in the Mac Pro to improve system stability.

MacBook Air SMC Update 1.0 (551KB)

he SMC Update fine tunes the speed and operation of the internal fan.

This update is recommended for all MacBook Air systems. The updater application will be installed in the /Applications/Utilities folder. Please follow the instructions in the updater application to complete the process.

Both appear to be aiming to fix issues related to total or intermittent freezing of the computer. Those issues were observed on Apple's support discussion boards lately.

Last week, Apple also released an update to its DVD or CD sharing Setup utility which allows to share your media from another computer's drive to the MacBook Air.

DVD or CD Sharing Setup Update for Mac (Mac 61.4MB - Windows 4.8MB)

his update installs software that enables remote disc sharing, system software restoration, and wireless migration with MacBook Air.

For additional information, please download the MacBook Air User Guide at http://manuals.info.apple.com/en/MacBook_Air_Users_Guide.pdf.

All of these updates are available either through the Software Update utility or through Apple's support web site [1].