I have recently installed Avant Windows navigator for openbox and when I go to other gui interfaces like Ubuntu Classic or Ubuntu it also starts so I uninstalled everything I installed to make it work in openbox
sudo apt-get autoremove tint2 lxterminal xcompmgr nitrogen guake sudo apt-get autoremove openbox obconf libobparser21 openbox-xdgmenu openbox-themes \ libobrender21 obmenu lxappearance-obconf lxappearance lxterminal
then went in to Ubuntu software center and uninstalled avant window navigator. Still the stubborn app keeps booting when i restart my system. Since I have done this the system is very unstable. I'm running Ubuntu 11.04 32 bit if that helps. Thanks in advance .