User Agent: Mozilla/5.0 (Windows NT 6.1; rv:23.0) Gecko/20100101 Firefox/23.0 (Beta/Release) Build ID: 20130814063812 Expected results: It would be really nice if we could configure Firefox to clean up browsing data on exit just like we can do in desktop. Although it may be hard to determine what is an exit on Android, I think it's worth consideration. Personally, the problem here is that Android sucks in the first place. That said, at least in practice Firefox does show a behavior just like it was "restarted" sometimes. For example, I have seen a previous tab thing similar to desktop's previous session button. Also, when we remove Firefox from recent apps, when we come back again the tabs are not there and it looks like "restarted". Implementation could be maybe adding a quit button, and then performing the cleanup from there. Or maybe trying to determine a relevant exit event. Either way, something that would dismiss the need for QuitNow and ObliviousSession add-ons.