I have fixed the keyboard problems, which seem to be the main complaint about 0.5.0. Also I have ditched the final .0 of the version number, as I don't expect to take that long to reach 1.0 now :-). This release also works once again with pygtk 2.4.x, and I have an RPM package available now too (partly based on Viktor Kerkez's package for Atomix).
The new release is available from the Python Kye page.