users-admin has been replaced with a gnome-control-center applet in GNOME 3, and it uses useradd, so I don't really care now. Feel free to close the bug.
(Note though that useradd seems to allow dots in usernames on most platforms, which probably suffer from the same potential problems as Debian.) -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org