or perhaps an ACL miss-configuration !?
You fail to state what type of replication you are using with OpenLDAP 2.3. Regardless, this would be due to an ACL issue or a misconfiguration of your replication setup.
--Quanah -- Quanah Gibson-Mount Sr. Member of Technical Staff Zimbra, Inc A Division of VMware, Inc. -------------------- Zimbra :: the leader in open source messaging and collaboration