When closing Firefox and more than one window is open, I get a warning telling me how many tabs I have open in that window, and asking if I want to continue. If I continue, tabs will be lost. The warning has two buttons, "Close Tabs" and "Cancel." If I close FF with File > Exit or Ctrl-Shift-Q, and next time when I open FF, all windows and tabs came back. The warning above should address this: It should give a third option of Exiting to bring back all windows when FF is started next time. Something like...