title: Can't restore Firefox Session
body: <p>This is not a programming question.
  My firefox just crashed and it won't restore previous session. It opens with this <code>about:sessionrestore</code> on the  URL. I get a alert box with <code>"The URL is not valid and cannot be loaded."</code></p>
  
  <p>Wondering if anyone has seen this before and how to manually restore the closed  sessions. I'm using the latest version of Firefox 9.0.1.</p>
  
  <p>Thanks</p>