Comment 13 for bug 801464

gdm:
  Installed: 3.0.4-0ubuntu3~natty1
  Candidate: 3.0.4-0ubuntu3~natty1
  Version table:
 *** 3.0.4-0ubuntu3~natty1 0
        500 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/ natty/main amd64 Packages
        100 /var/lib/dpkg/status
     2.32.1-0ubuntu3.2 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty-security/main amd64 Packages
        500 http://us.archive.ubuntu.com/ubuntu/ natty-updates/main amd64 Packages
     2.32.1-0ubuntu3 0
        500 http://us.archive.ubuntu.com/ubuntu/ natty/main amd64 Packages

PPAs installed are:
1) TOR
2) Medibuntu
3) Google Earth
4) gnome3-team/gnome3
5) ubuntugnometeam/ppa-gen