Indeed https://bugs.launchpad.net/bugs/579044 looks extremely similar, however I never did disable user listing nor do I have such setting in my gconf files. But the result seems to be the same. Somehow I do not have a user list and this results in a crash. Further more a have no custom.conf which was removed to fix the issue. But will look deeper into the system now if I can find an old setting somewhere. Please feel free to duplicate my report.
Indeed https:/ /bugs.launchpad .net/bugs/ 579044 looks extremely similar, however I never did disable user listing nor do I have such setting in my gconf files. But the result seems to be the same. Somehow I do not have a user list and this results in a crash. Further more a have no custom.conf which was removed to fix the issue. But will look deeper into the system now if I can find an old setting somewhere. Please feel free to duplicate my report.