Binary package “indicator-session-gtk2” in ubuntu precise
indicator showing session management, status and user switching
This indicator is designed to be placed on the right side of a panel and
give the user easy control for changing their instant message status,
switching to another user, starting a guest session or controlling the
status of their own session.
.
It requires some way to be hosted into a panel. For the GNOME Panel the
appropriate package is indicator-