this bug may apply.Bug NIM-086874http://support.esri.com/en/bugs/nimbus/TklNMDg2ODc0With a large number of services published, ArcCatalog 10.1 SP1 takes a long time to validate and then list services from ArcGIS Server 10.1 SP1 when the Config store is set to a UNC path (Universal Naming Convention) or user account is from an LDAP\Active Directory identity store.I think this is resolved in 10.2