Another update released by Apple during the night, the MacBook Air Bluetooth Firmware Update 1.0: The MacBook Air Bluetooth Firmware Update 1.0 should be installed on all MacBook Air Systems.
The updater application will be installed in the /Applications/Utilities folder.
To complete the bluetooth firmware update process, please follow the instructions in the updater application(/Applications/Utilities/MacBook Air Bluetooth Firmware Update.app). The updater will launch automatically.
For more information about firmware updates for Intel-based Macs, please visit: http://support.apple.com/kb/HT1504
[translation by Linathael]