Imagine this scenario: # I start Firefox and go to a page that requires a login, so I enter my master password. # I leave my computer. # Somebody else accesses my computer. They can go to any site they want, since Firefox 'remembers' my master password. How can I protect myself from this? I can close Firefox, I can log off my computer or I can use a screen-saver password. I would prefer a solution within Firefox, something like a button (possibly under Application Menu → Passwords) to force the master password to be re-entered the next time it is required.