>> I'm testing OpenLDAP 2.3.27 (RPM) on Centos 5.2, used as a reverse >> proxy to AD. When slapd is run with debugging disabled (or set to 0), >> search requests throw the following error: > > OpenLDAP 2.3.27 is ancient. OpenLDAP 2.3.43 was the final OpenLDAP 2.3 > release. > > The current release is OpenLDAP 2.4.14. I suggest you retry with a > modern version of OpenLDAP, as numerous issues have been fixed since > 2.3.27. > > --Quanah Retested with 2.4.14, exactly the same results. If I hammer away with the query on -d 0, I do occasionally get the correct result. If I hammer away on -d 1, I occasionally get the same failure I get with -d 0.