Whenever I turn off my PC (restart or shutdown). All the tabs in my browser up and vanish and I am back at the homepage. There is no Restore session button at the bottom. In History, the "Restore previous session" is greyed out. I have "show my windows and tabs from last time selected" and the "Don't load tabs until selected" is not ticked. I deleted the Sessionstore files like some suggested and still not results. This started when I updated to Firefox 13. Does Firefox 13 not support session restore? Please Help