If you are using gnome 2.x and you have problems with your indicator applets not displaying properly after login. I often do. I don’t know the reason. It occurs sporadically and more often than not.
A simple fix is to restart gnome-panel. You don’t need to use sudo. Open a terminal and run the following command.
$ pkill gnome-panel
That was easy–and is usually all you need to do.
However, if that didn’t solve your problem. You can try reseting your panels and get pristine panels again. WARNING: If you have customized your panels by adding application launchers and etc, you will lose those setttings and have to customize them again.
Now that you have been warned, here are the steps to reset your panels.
$ gconftool-2 --recursive-unset /apps/panel $ rm -fr ~/.gconf/apps/panel $ pkill gnome-panel
I hope you found this post useful.