Xdg processes are not disappeared even logout

Issue

• If user "A" starts X11 and user "B" runs in a terminal window (by either "ssh -Y B@localhost" or "su - B" followed by "export DISPLAY=:0.0" then when "B" runs gtk based applications an assortment of warnings to the screen and /var/log/messages appear. These do not appear when "A" owns X11 and "A" starts the gtk application.