ACLs Seem to Have No Effect

I am having some difficulty setting up the ACLs on my OpenLDAP server (2.4.8). No matter what I change, the ACL rules I write into my slapd.conf file seem to have no effect at all.

I have followed the FAQ here to try to set a simple password change ACL: http://www.openldap.org/faq/data/cache/320.html

As well as another to try to block Anonymous binds: http://www.openldap.org/faq/data/cache/318.html

But neither seem to have any effect at all. My present slapd.conf ACLs are as follows: --- access to attrs=userPassword by self =xw by anonymous auth

# allow only rootdn to read the monitor access to * by self write by anonymous none by users read --- Is there some other part of the configuration that might disable ACLs.