http://blogs.msdn.com/b/socaldevgal/archive/2008/07/13/vibro-net-announcing-the-beta-release-of-zermatt-developer-identity-framework.aspxInterested in the 'identity problem'?  Sometimes these quiet, little betas should really get more attention.  If nothing else, you can learn about the three styles of handling claims-based identity - active, passive or 'passive-aggressive' en-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)