Can't kill KDE procs

[Ravna]

I'm running a i386 Current of today.
Now I  have problems with apps that use kdelibs.
They freeze after a few clicks and can't be closed.
There are no error messages when started from a terminal.
They can be terminated, but still remain in memory - along with their 
kdeinits - both with "madvpo" status.
When trying to reboot, the system gets as far as "all buffers synced" 
and then just sits there.