This was fixed for me after the update for lightdm to 0.9.2-0ubuntu4. Since this bug has seen no activity from other people I'm marking it as fixed.
** Changed in: lightdm (Ubuntu) Status: New => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811410 Title: lightdm segfaults after selecting user To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/811410/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs