Restore an old/previous session, but do not load the tabs right away: an end to the dilemma of empty session versus restoring tabs. Add to "about
:config", if it's not already there:
Code:
browser.sessionstore.restore_on_demand
Set to "true", and it doesn't hurt to add also:
Code:
browser.sessionstore.max_concurrent_tabs
Set to 0. I guess it depends on the version or whatever, I don't care to find out. I wish I knew that...