How to get back the "Login Window..." icon in the menu bar? Once I've upgraded to Lion I had a new icon on my Menu Bar next to Spotlight. It was an outline of a mugshot similar like one of the Guest account.

When I clicked on that icon I was able to select "Login Window..." which basically locked my Mac.

For some reason this icon is gone. I don't use it frequently so I can't clearly say when it went missing but I'd say within last 10 days probably.

How do I get it back? I have no idea where to re-enable it.
It can be enabled via System Preferences > Users &amp; Groups > [Unlock] > Login Options > Show fast user switching menu as...