Alright, so I want Firefox to delete all active logins/cache when I close it. My privacy settings are:
Accept cookies from sites
Accept third-party cookies: Always
Keep until: I close Firefox
[Show Exceptions] is empty
Clear history when Firefox closes
Cookies
Active logins
Cache
Obviously, this didn't work. I closed Firefox, reopened it, and I'm still logged into all my websites. So I decided, the hell with it, I'll add cookies to be cleared when Firefox closes...
And sure enough, it didn't delete any of my cookies when I re-opened it! It logged me back into all of my websites. What could be causing this behavior? I'm running Firefox 36.0.4 and I have the same behavior on both Windows 7 and Mac OS X 10.10.
Here's what it is currently: