Comment 10 for bug 236305

I had just found this bug thread so I'm re-posting the following report from bug #26338:

Running Intrepid 8.10 i386.

Made the decision of adding another user with admin privileges. However while choosing a name ended up calling this new user "admin".

Stupid decision as it was, I'm to blame entirely, but the Gnome "Users and Groups" accepted without further notice. In the next boot I found out that all my sudo privileges had gone (the group "admin" vanished).

Entered the root terminal, fixed things up (I was happy to find a valid group copy in an old /etc directory, just for comparison), but kept wandering if a dumb decision like mine shouldn't be forbidden, some user names just prohibited.

Martin Pitt at Ubuntu replied:

I fully agree, the computer should be perfectly able to detect and
disallow "bad" user names. Since this bug is closed, and unrelated,
could you please file a new bug against gnome-system-tools and tell us
the bug number here? Thank you!