kdesu problem

Somehow my yast button in kde stopped working (just a hourglass for a few
seconds before it disappears). The properties are correct and I'm able to
start Yast from a konsole window. the yast icon is able to start
as 'normal' user without rootprivileges but that's of no use ofcouse. It's
somehow connected with kdesu, because if I replace the command with
gnomesu /sbin/YaST2 it works. In a konsole window gnomesu asks for the root
password while kdesu just returns.
I saw this problem mentioned as bug in alpha 10.2 releases, but it's able to
reappear somehow. Anybody seen this too? solutions? (well, it's not a
problem, but certainly annoying for unexperienced users).
taco

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