We have 4 openldap servers, 1 and 2 are masters with mirror mode., 3 and 4 are slaves. 3 and 4 sometimes get out of sync with masters. But a few minutes or a few hours later, it can get synced again with some "random" events. The reason I call it "random" because I could not find any patter yet. This happens almost every day.
a) Always note the version of OpenLDAP you are using b) Use delta-syncrepl --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