Could you possibly comment on FF&#x27;s seeming inability to unload tabs from memory?  There are numerous add-ons that claim to unload tabs and free up that memory, but none of them work as advertised.<p>And, when FF crashes and reloads, restoring all the tabs, it seems like the tabs aren&#x27;t loaded (the page is blank and does a reload when selected), yet if you look in task manager (Windows 7), all the memory seems to have already been consumed.<p>Should tabs be able to be unloaded from memory, in theory?  If so, is it implemented this way?  If not, is there a reason?