How to restore default panel in Ubuntu 9.10
I messed up with my Ubuntu panel and lost the “Applications, Places and System” menu on the panel. This post helped me to restore and revert back to the default panel in Ubuntu 9.10. http://martinwebster.info/2009/06/13/restore-default-ubuntu-panel/ (Though the post is for 9.04 it works fine for 9.10).
The commands to be used are
$ gconftool-2 --shutdown $ rm -rf .gconf/apps/panel $ pkill gnome-panel