Comment 42 for bug 15001

I can confirm this bug for breezy (20050919), too, but only if I never used kdesu before
(after using kynaptic or adept there isn't any bug; after reboot, the same).
Perhaps it helps you to correct this bug.
Another solution would be to let kcontrol and kde-systemsettings execute the
command "kdesu kcmshell modulename". I would really think that this
"workaround" would be better than a not working Administrator Mode.