KDM won't start KDE

[jse at xmission.com]

I just installed FreeBSD 4.8 on this machine and I set up kdm to run by 
changing /etc/ttys to:

ttyv8 "/usr/local/bin/kdm -nodaemon" xterm on secure

When it boots I get:

login: ..<time>.. kdm[127]: Abnormal helper termination, code 0, signal 
73

But KDM seems to start up fine and I get the login screen, but when I 
login (as either root or a user) the login dialog disappears and I'm 
left with the KDE background and the X cursor.  If I goto tty0 I now 
have the message:

..<time>.. kdm[130]: no modules loaded for `kde' service

and in bot /var/log/XFree86.0.log and kdm.log it has this message 
repeated about 4 times a second:

AUDIT: ..<time>..: 124 XFree86: client 2 rejected from local host

I searched on google for the above messages and found some discussion 
about PAM problems.  I looked at pam.conf and noticed that xdm and gdm 
were listed in there, but not kdm.  So I added an identical section for 
kdm but it doesn't seem to have made any difference.

If I remove the kdm stuff from ttys and get a command line login I can 
run startx and KDE comes up just fine.

Was there something else I needed to configure for KDM to run correctly?

Thanks
  -Scott