GDM opens up dozens of login sessions when switching users

[Pekka Tiittanen]

It seems that at the moment GDM opens a new login session everytime a user clicks "Login as another user" -option in the lock window.

At the moment this seems to work unexpectedly as every single login session is left behind running and it will eventually cause problems as they eat up memory and cpu time.

I asked this on irc, in #gdm and they did some investigative work which resulted to this patch in Debian to be the culprit: https://bazaar.launchpad.net/~ubuntu-branches/ubuntu/raring/gdm/raring/view/head:/debian/patches/08_frequent-users_greeter.patch

Here the login session is marked as X11, when it should be "LoginWindow". The rationale for that patch can be found here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=624474

Please, fix this soon as it causes problems if GDM is in use in multiple user machines.