Today’s release of Mac OS X Lion 10.7.1 includes fixes for the least MacBook Airs from Apple.
* Address an issue that may cause the system to become unresponsive when playing a video in Safari
* Resolve an issue that may cause system audio to stop working when using HDMI or optical audio out
* Improve the reliability of Wi-Fi connections
* Resolve an issue that prevents transfer of your data, settings, and compatible applications to a new Mac running OS X Lion
* Resolve an issue where MacBook Air may boot up when MagSafe Adapter is attached
* Resolve an issue causing intermittent display flickering on MacBook Air
* Resolve an issue that causes the SD card slot in Mac mini to run at reduced speed with SD and SDHC media
Even if you aren’t having issues with the booting with an attached MagSafe A/C adapter or the display flickering, this is a recommended update from Apple, given that it has the usual stability and compatibility updates.