Am using the LDAP Authentication extension[1] on MediaWiki 1.14 against Active Directory (2008 if it makes a difference). I am looking to allow access to users in subdomains (LDAP referrals). Anyone have this working? Anything I need to be concerned about other than sAMAccountName collisions? Ray [1] http://www.mediawiki.org/wiki/Extension:LDAP_Authentication