Hello,after last D-U in siduction with updating the xfce-session the situation is the same. I have no stable Desktop-view, the Desktop will be black and no things will go away.
with regards Ch. Hanisch -- Mein öffentlicher Schlüssel ist auf dem Keyserver 'https://keys.openpgp.org' unter ch-hani...@t-online.de (E53DF487)