[Bug 36147] switch user doesn't works properly after locking the screen

[Xavier Claessens]

Public bug report changed:
https://launchpad.net/malone/bugs/36147

Description changed to:
    I lock the screen, gnome-screensaver starts and I choose to switch
    user. Gnome-screensaver displays a list of users. I select one user
    and ask to switch, GDM starts and ask me again witch user I want to
    login, GDM should only asks for the password of the user selected in
    gnome-screensaver's list.