Per chi dovesse trovarsi alle prese con la configurazione di Active Directory Federation Service 2.0 (AD FS) e SharePoint 2010, segnalo un paio di risorse utili:

• Articolo
  http://technet.microsoft.com/en-us/library/hh305235.aspx
• Video
  http://www.microsoft.com/resources/msdn/en-us/office/media/video/sharepointtc.html?uuid=efacb848-f55f-4805-9d93-1cac97e7db97&from=mscomsharepoint
• Guida step-by-step
  http://marcvaneijk.wordpress.com/2010/06/12/sharepoint-2010-and-adfs-2-0-the-complete-step-by-step-guide/