How to enable restore / save tabs warning in firefox

We all have been using Firefox from years now and we all love it. If you are spending most of your time in front of your computer and maximum of it in a browser, the one thing that you hate is loosing all those thousand websites you have loaded during your web quest. The bad part is its not few enough or important enough to bookmark. Want to resume from where you stopped last. Take a snapshot of your current efforts before taking a nap or break or whatever. You recognize this ? This thing » Read more