Apple released another update yesterday, this one being dedicated to MacBook Air owners:
About MacBook Air SMC Update 1.0
The 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.
Additional information from the following webpage: http://www.apple.com/support/downloads/macbookairsmcupdate10.html)
