This would be important for me too.
I am working on a telecom project where we are migrating very old apps from WebSphere Mainframe to JBoss AS.
They have only a login page that sets the session for every directory (a.k.a application) in the server.
So it would be very good if i could migrate the apps and have the sessions shared, as they do in websphere, so i can migrate "as is" (we don't even have sources for most of those apps).
Is there any update on this issue? I see that it was "timed out" in JIRA....