Visited a secure site, but found no indication on FIREFOX that site was secure (e.g.: No padlock displayed) so switched to internet explorer to continue....
Visited a secure site to renew my membership, but there was no indication on FIREFOX WINDOW that the site was secure. Whereas, when using Internet Explorer the usual padlock symbol was displayed.
Alla svar (1)
The padlock has been replaced by the site identity button, for details on using it see https://support.mozilla.com/kb/Site+Identity+Button
If you want to add a padlock icon to the location bar, you can use the Padlock add-on - https://addons.mozilla.org/firefox/addon/padlock-icon/