XDM Suddenly Doesn't Start on Boot

I'm running 2.4.19 on an Intel box.  I haven't had to reboot for at
least a month but suddenly now when I do reboot XDM does not start and I
get the error message:
rshd: getpeername: Socket operation on non-socket

I start XDM from the last line in /etc/inittab:
x:5:respawn:/etc/X11/prefdm -nodaemon

I've been running and rebooting this system (Mandrake) for over a year
with no problems until now.

Everything else (including ftp, http, telnet) seems to be functioning
fine.

Can someone clue me in to what might be going on and how I can correct the
problem?  Thanks.

-- 
Marshall Lake -- [email protected] -- http://melake.erols.com