netbsd-help: HELP with X display

Subject: HELP with X display
To: None <netbsd-help@NetBSD.org>
From: Paul Newhouse <newhouse@rockhead.com>
List: netbsd-help
Date: 03/20/2007 05:58:36

NetBSD pimin 3.0.1 NetBSD 3.0.1 (PIMIN.MP) #0: Sun Sep 10 20:06:49 PDT 2006  root@bigbox.rockhead.com:/usr/src/sys/arch/i386/compile/PIMIN.MP i386


After running as expected for weeks I suddenly get this error:

   pimin[newhouse]: xterm
   Xlib: connection to ":0.0" refused by server
   Xlib: No protocol specified
   
   xterm Xt error: Can't open display: :0.0
   pimin[newhouse]: echo $DISPLAY
   :0.0
   pimin[newhouse]: xhost +
   Xlib: connection to ":0.0" refused by server
   Xlib: No protocol specified
   
   xhost:  unable to open display ":0.0"
   
Is there some way to recover, other than restarting X?

TIA,
Paul