Where you logged in during that previous session?

Yes, when closing each session I am logged into Google. I have my Google settings set to not save login information. And when I launch FF again I am indeed not logged in. However if I restore my previous session it restores my login.

Belliger said

if I restore my previous session it restores my login.

That's because you were logged in.

So you don't think this is a security issue?

Because this is something new. I have always used the restore previous session feature, and until recently I have needed to log back into any account I did not have set to save my login information.

There is no real security issue. Only your computer has the session restore, and to use your computer account, one needs the password.

Firefox stores cookies used in tabs that are currently open in the sessionstore.js file as part of saved session data, so those cookies will be restored if Firefox is closed without first closing these tabs.

You can set browser.sessionstore.privacy_level to 2 (never) or 1 (non-HTTPS) on the about:config page to disable saving cookies via session restore in the sessionstore.js file. The browser.sessionstore.privacy_level_deferred pref is used when you do not reopen the previous session automatically via "Show my windows and tabs from last time" and uses the same values.

• http://kb.mozillazine.org/browser.sessionstore.privacy_level

You can open the about:config page via the location/address bar. You can accept the warning and click "I'll be careful" to continue.

• http://kb.mozillazine.org/about:config

Thank you cor-el! Both for explaining why Firefox was acting the way it was and for the solution. This perfectly solved my issue.