Apple has released an update for the Airport Utility and also an update to 10.7.3 for Mac OS X Lion.

Regarding Airport Utility Update

Use AirPort Utility to set up and manage your Wi-Fi network and AirPort base stations, including AirPort Express, AirPort Extreme, and Time Capsule. See a graphical overview of your Wi-Fi network and devices. Change base station and network settings, or manage advanced features such as security modes, wireless channels, and more.

 

For the latest information on AirPort software, check Software Update in System Preferences or the following Apple website: Apple Support Downloads.

 

Learn more about Apple Wi-Fi at: http://www.apple.com/wifi/.

Regarding 10.7.3

The 10.7.3 update is recommended for all OS X Lion users and includes general operating system fixes that improve the stability, compatibility, and security of your Mac including fixes that:

• Add Catalan, Croatian, Greek, Hebrew, Romanian, Slovak, Thai, and Ukrainian language support
• Address issues when using smart cards to log into OS X
• Resolve issues authenticating with directory services
• Address compatibility issues with Windows file sharing

For detailed information on this update, please visit this website:http://support.apple.com/kb/HT5048.

For information on the security content of this update, please visit:http://support.apple.com/kb/HT1222.