sylvain.thomas(a)gmail.com wrote: I can confirm that the problem is easily reproducable. Adding a debug message here diff -u -r1.248 syncprov.c --- syncprov.c 17 Oct 2008 15:40:49 -0000 1.248 +++ syncprov.c 31 Oct 2008 21:06:56 -0000 @@ -1638,6 +1638,7 @@ si->si_sids[i] = sid; } } else { + Debug( LDAP_DEBUG_SYNC, "Empty maxcsn for %s\n", op->o_req_dn.bv_val, 0, 0 ); /* internal ops that aren't meant to be replicated */ ldap_pvt_thread_rdwr_wunlock( &si->si_csn_rwlock ); return SLAP_CB_CONTINUE; shows that some of the missing entries are caused by this situation, but not necessarily all. Still investigating. -- -- Howard Chu CTO, Symas Corp. http://www.symas.com Director, Highland Sun http://highlandsun.com/hyc/ Chief Architect, OpenLDAP http://www.openldap.org/project/