Today, Apple is pushing out an Airport Utility software update. With the usual great and patented Apple detail, the update:
"..includes general fixes and compatibility updates for the following applications: AirPort Utility and AirPort Base Station Agent. The update also installs AirPort Disk Utility on Macs running Tiger." There is also an update of the Airport Utility for Windows.
The new software is 18.9 MB, and does not require a restart. Hooray.
Thanks to Mikey for the tip.