There's an error in the log file you provided, though. Could you check when it exactly happens (e.g. when pressing OK for the password dialog...)?
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/684587 Title: users-admin won't allow creation of new user -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
