darklight001

Yes we have, and you can try per-Windows private browsing in Firefox 20 beta, http://www.mozilla.org/firefox/beta/

64bit Firefox isn't a priority, as there are few benefits, and it's alot of work when there are other, large and more important projects to work on. 32bit Firefox runs well on 64bit windows for the time being.

We are always working on improving memory usage in Firefox (we have a team called memshrink working on it in every release). Have you tried Firefox 19 after a Firefox Reset?

The Mozilla Maintenance Service only starts up when there is a Firefox update to apply, it won't start up any other time, so it's not running all the time.

You should try looking into the Firefox ESR for Enterprises, it might be more what your org needs to deploy Firefox.

Let's stick to real science here