Hello,

my problem seems to be solved! What I did is:

1. Genrate a new user with Kuser.
2. switch to another console (Ctrl-Alt-F1)
3. cd .kde
4. su (and enter the root-password)
5. chown -R user.group * (with user/group = my username/group, resp.)
6. chown -R user.group .*
7. exit (returns from root-whell to user-shell)
8. logoff and reboot

Since then KDE works.
Thus, let's pray that this state will last...

Greetings,

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