Since version 6 AirPort Utility has sucked. That’s why I kept an old copy of version 5.6 around: I like the fact that it doesn’t assume you’re dumb, like 6 and later versions do.
However, there’s a way to display some useful information about the connected clients in an easy way (hat tip Marco Dalprato): hold ⌥ (option) while double clicking on the AirPort base station you want to inspect.
