[plouf@laptop ~]$ compiz --replace --indirect-rendering --strict-binding gconf &
[1] 6306
[plouf@laptop ~]$ ps -A | grep compiz
 6306 pts/0    00:00:00 compiz
[plouf@laptop ~]$ gnome-window
gnome-window-decorator   gnome-window-properties  
[plouf@laptop ~]$ gnome-window-decorator --replace&
[2] 6315
[plouf@laptop ~]$