I do not know how I did it but I am now missing my administration menu. I am using 12.04 (but with all upgrades) and GNOME FALL-BACK. Could anyone direct me on how to restore it? I have tried adding it in the edit menus GUI but it is not there.
To force Gnome to recreate its panels with default values, enter the following commands into a terminal:
Your panel should now be back with all its menus (but of course minus any customisations). If for some reason they don’t appear immediately, a reboot should fix it.