i can't see or i am in as aved pagein earley versions we see a locker.
I have always see a locker when I was at a saved page (banking), now I have the latest version of Firefox and I don't have the locker anymore.Yhe locker was always in the statusbalk
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The whole status bar was redesigned, so now you use the area to the left of the address (green, blue, or plain) to check whether the site is secure.
Site Identity Button | How to | Firefox Help
Other discussions about this change mention an add-on you can use if you really prefer seeing a lock:
firefox 4 where is the padlock bottom right corner | Firefox Support Forum | Firefox Help