Ghosted logins in w/who

[Daniel Braniss]

> On Mon, Apr 08, 2013 at 08:56:42PM -0500, damonray at mac.hush.com wrote:
> > I recently upgraded to FreeBSD 9.1-STABLE, and there was a strange
> > added side effect.
> > Users that telnet into the machine seem to have their logins forever
> > ghosted in who/w.
> > If a user connects via telnet, then logs out, their login still
> > remains in the w/who. If another user logins in with the pty they had,
> > whatever they do also shows up in the ghosted w/who of the previous
> > user using that pty.
> > For example:
> > User X logs in, runs BitchX. Detaches the process and logs out.User Y
> > logs in, gets assigned User X's previous pty, who/w now reports that
> > user is running BitchX. That user has no access to the BitchX session
> > or anything, it's just being displayed weird in who/w.
> > I seem to remember this problem like a decade ago and I had written a
> > script or there was a script that passed around called clearlogin.
> > Any ideas? Thanks all!Damon
> 
> Is GNU screen involved?  It sounds like it.
> 
> Try to repeat the problem without GNU screen.

something changed beteen 8 and 9 with respect of handling of utmp,
I tried to research this but got bogged down with other things.

danny