> xdm="YES" in rc.conf.  /usr/X11R6/lib/X11/xdm files all
> have mtime Nov 28th 2045Z, so I'm pretty sure they are from the release.
> 
> vague symptoms:
> 
> several cases of 'machine panics and reboots when logging out on the
> console'

Restarting getty(8) while xconsole is running exposed a `dangling pointer'
bug in the kernel: the controlling terminal (in this case xconsole's
pseudo terminal) would reference a session after it was freed (these sessions
come and go with each getty instance).

The patch I applied to -current appears below. This bug appears to be
present in the whole lineage of NetBSD releases.


Index: kern_proc.c
===================================================================
RCS file: /cvsroot/syssrc/sys/kern/kern_proc.c,v
retrieving revision 1.44
retrieving revision 1.43
diff -r1.44 -r1.43
1c1
< /*    $NetBSD: kern_proc.c,v 1.44 2001/02/04 22:32:24 pk Exp $        */
---
> /*    $NetBSD: kern_proc.c,v 1.43 2000/11/08 14:28:13 ad Exp $        */
442d441
<       /* Remove reference (if any) from tty to this process group */
447,450c446
<       if (--pgrp->pg_session->s_count == 0) {
<               /* Remove reference (if any) from tty to this session */
<               if (pgrp->pg_session->s_ttyp != NULL)
<                       pgrp->pg_session->s_ttyp->t_session = NULL;
---
>       if (--pgrp->pg_session->s_count == 0)
452d447
<       }