Hi,
To modify the cn=config DIT you'll have to modify the files under
/etc/ldap/slapd.d/cn=config where your config is stored.
In your case :
- delete  /etc/ldap/slapd.d/cn=config/olcDatabase=\{2\}null/
- modify  /etc/ldap/slapd.d/cn=config/cn=module{0}.ldif  by removing the
line olcModuleLoad: {1}back_null
You should then be able to restart the slapd daemon.
This is not the supported method. Supported method is slapcat/slapadd, as has been mentioned numerous times on the list.
OpenLDAP 2.5 may add delete support for cn=config. --Quanah -- Quanah Gibson-Mount Lead Engineer Zimbra, Inc -------------------- Zimbra :: the leader in open source messaging and collaboration