Comment 13 for bug 461115

Documented at <https://wiki.ubuntu.com/KarmicKoala/ReleaseNotes#Ubuntu%20Netbook%20Remix%20missing%20shutdown%20applet%20after%20upgrade>:

After upgrading Ubuntu Netbook Remix, the shutdown applet may be absent from the top panel. As a workaround, move the current applets to make some available space on the panel, then right-click in the freed space to add the "Indicator Applet Session" applet manually. See Bug:461115 for detailed instructions.