Temporary availability of both Shutdown option in System panel and FUSA

Binary package hint: fast-user-switch-applet

I accidentally got both the Shutdown option in the System menu as well as my FUSA.

I preferred using the Shutdown Option from the System menu, so I didn't like the default FUSA after upgrading to Jaunty, so I removed the FUSA and was using the Shutdown Option from SYstem Menu.
While demonstrating to other Ubuntu users, about how to get back the Shutdown option on System menu I had to re-add User Switcher option in the panel using Add to Panel option. I accidentally added 2 User Switcher buttons and removed one. Now both the Shutdown options are present (System Panel as well as FUSA)

However, the problem is that the two options co-exist as long as the current session. After I restarted the system, only the FUSA was left and the Shutdown option from System menu disappeared again.