When a request to Validation Manager for an end-entity certificate that contains a service locator extension with the  following two locators in the precise order;

 1.2.840.114021.4.1 - URI:https://tc20.identrus.com
 OCSP - URI:https://identrus20.identrus.com

The following message appears in the trace log;

[Tue Feb 20 08:57:41 2007] APR_EGENERAL in sendAndReceiveOcspByHttp at ocsp_identrus.c:180
[Tue Feb 20 08:57:41 2007] APR_NOTFOUND in ocsp_identrus_filter at ocsp_identrus.c:1911
[Tue Feb 20 08:57:41 2007] OCSP request processed.
[Tue Feb 20 08:57:41 2007] APR_PAPI_OCSP_STATUS_MALFORMED_REQUEST in process_ocsp_single_request_extensions at ocsp_asn1.c:1583
[Tue Feb 20 08:57:41 2007] APR_PAPI_OCSP_STATUS_MALFORMED_REQUEST in decodeRequestList at ocsp_asn1.c:1817
[Tue Feb 20 08:57:41 2007] APR_PAPI_OCSP_STATUS_MALFORMED_REQUEST in decodeTBSRequest at ocsp_asn1.c:1981
[Tue Feb 20 08:57:41 2007] APR_PAPI_OCSP_STATUS_MALFORMED_REQUEST in decodeOCSPRequest at ocsp_asn1.c:2263
[Tue Feb 20 08:57:41 2007] OCSP request processed.

If the order of the locators is swapped round it works ok.