daniel@darkstar:~$ Window manager warning: Lost connection to the display ':0.0' ;
most likely the X server was shut down or you killed/destroyed
the window manager.
compiz: No composite extension

** (compiz-manager:23562): WARNING **: Couldn't find a Selection Owner, perhaps no WM running?
Otherwise, manually kill your wm, and report the bug to the developers, it doesn 't follow the standards.
Falling back to looking for a defined WM in xlsclients.
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cgwd
kicker
compiz-manager
gnome-terminal