OK, guys, I've solved this on my system. We ARE going to need a new wifi-radar package in the patches repository to solve this for everyone else. Fortunately, I already have that built
If you can expedite testing we'll be golden. This will affect other people until the new package is generally available.
What caused this:
on a system WITHOUT GNOME will upgrade gtk2. To work with gtk 2.10.x you need two additional packages for wifi-radar: pygobject and pycairo. Adding these two packages from Extra solved the problem.
Look at it this way: wifi-radar 1.9.8 is much nicer than 1.9.6 anyway