Restore panels in Ubuntu.

In Ubuntu 10.04 Lucid Lynx the shutdown applet was found missing once. After restart it reappeared. Today I found the Network Manager applet in top right corner. Although this may be happening due to some bug I found the following way to restore the panels. Open a terminal or if the top panel is missing and you can't click on Applications/Accessories/Terminal press Alt+F2 and type 'gnome-terminal' (without quotes) in run box and type the following commands:

$ gconftool --recursive-unset /apps/panel
$ rm -rf .gconf/apps/panel
$ pkill gnome-panel

That's it. Your panels would be restored with default settings.