This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
I have 2 applications made in JSF 2.0 an i have been experimenting same issue with both apps. I have session beans in each one that holds que logged user data but if i join the application from another client (browser, pc, country)... the session is shared between all clients.