Two items, possibly related:
System Settings crashes when clicking on System and PolicyKit authorization.
Crashing is instant and happens every time.
System settings will not run as administrator. By that I mean it will not run
with Gksu from a menu, or from a root terminal (with xhost set properly).
I ran across these bugs when trying to run programs as a different user (which
also doesn't work).
KDE version 4.3.4-1.
Hawaiian Astronomical Society: http://www.hawastsoc.org
HAS Deepsky Atlas: http://www.hawastsoc.org/deepsky