Recently I have been working on implementing Single sign on (SSO)for
Flex and AIR.
Is it possible to achieve SSO for an AIR application ? If yes Could
you please share some thoughts on it.

I am authenticating against AD with Kerberos based on SPNEGO. I have a
CAS server setup on Tomcat and so the Cas login page shows up when I
am authenticating for the first time.

But I want that my AIR client should not ask the user to authenticate
if the user has already logged on to his/her machine authenticating
against AD.
Any guidelines would be of great help.
Thanks in Advance.

Regards,
Vandana