I have set up an OpenLDAP server on Server 1 (running 10.04 desktop) per https://help.ubuntu.com/community/OpenLDAPServer and confirmed that it worked by using LDAP tools to query the LDAP directory. I was also able to configure an OpenSUSE desktop to use this server for LDAP client authentication.
I now want to set up Server 2 (running 10.10 desktop) for LDAP client authentication. I have followed the instructions at https://help.ubuntu.com/community/LDAPClientAuthentication but authentication is not working. It acknowledges that Server 1 is there, but silently fails when I attempt to log in.