During today's Operations Service upgrades the OSG BDII machines did not return as expected. The OSG BDII was unavailable from 16:10 UTC until 17:04 UTC. This maintenance was expected to be transparent as announced in the change log sent via mail and posted at http://osggoc.blogspot.com/2011/05/goc-service-update-tuesday-may-24th-at.html.
This was due to a system level update that included an OpenLDAP update that was not compatible with the BDII software. OpenLDAP was reverted and BDII is now fully functional.