There has been some big changes to the "Session" Indicator in Ubuntu recently, so I thought I'd throw up a quick mock up of a more concise indicator. Nothing fancy or ground breaking, but I thought I'd share.
update: * white menu style * wider menu * more apparent who's logged in and who's not * grouped options that power off the device and ones that don't
I think it might be better to make the whole "Logged In/Not Logged In" thing transparent and just allow users to switch the active user, letting the system log users in if they're not already. The difference between "Logging out" and "Switching the user" is often somewhat confusing. In the unlikely event that the system runs out of resources, a system dialog could request that someone switches to their user and closes some apps. In the future, the system could even clear another users' apps from the memory if they've told the system they're where-you-left-off/auto-saving/etc.
Nice indicator menu. The most important think to me is. When I move my mouse cursor to items in that popover. Indicator menu should not switch accidencially to sound, battery, wlan menu. It is so annoing in ubuntu. The best solution would be: each time to click on that icon what menu you need.