Use of NetGroups breaks local logins

Hi all,
        New installation of FDS 1.0.2 on FC5. I have gotten netgroup access 
to host logins set up and working by following the steps in this document.

   http://directory.fedora.redhat.com/wiki/Howto:Netgroups

This required the addition of this new (second) line in the account section
of /etc/pam.d/system-auth for the access.netgroup.conf file to avoid issues 
with crond, which they don't elaborate on.

account  required   pam_unix.so broken_shadow debug
account  required   pam_access.so accessfile=/etc/security/access.netgroup.conf
account  sufficient pam_succeed_if.so uid < 500 quiet
account  [default=bad success=ok user_unknown=ignore] pam_ldap.so debug
account  required   pam_permit.so

But now I am seeing these failures in /var/log/secure. 

Oct 25 18:01:01 lin2600 crond[22707]: pam_access(crond:account): access denied 
for user `root' from `cron'

I also cannot log in as root.

So firstly, is all the advice in the above document accurate? Is the placement
of this line incorrect (I am just starting to play with PAM) or do I need to 
add entries for root (or ALL) in /etc/security/access.conf (presently all 
commented out as it appears to be the default setup)?

Thanks.

-- 
- Kyle 
---------------------------------------------
kylet@xxxxxxxxx   http://www.panix.com/~kylet    
---------------------------------------------