title: JSF 2.0 and Multiple Submission problem
body: <p>Somebody told me that JSF 2.0 automatically handles multiple submission problem.
  Is that right?
  If yes, how does JSF 2.0 do that?
  If no, what are the things that must taken care of, so that you don't leave any pitfall while handling this problem?</p>
  
  <p>Thanks.</p>