Posted 09 January 2010 - 09:35 AM
I am not clear whether AOL is your broadband ISP or not. It sounds to me like you are using AOL for E-mail or your home page and not connecting using their software; thus, you are always connected to your broadband ISP and can use Ff as your default browser. You do not login to your ISP through Ff, so you do not need a password for it to connect. Now since your computer is always connected, then anyone with access to your computer can use the internet, so you may want to have a password for the computer login.
You seem to have a layered protection with a resident firewall, AV, and several anti-spyware applications, so you should be as safe as one can expect, given some care about what you download or where you browse. I would recommend, however, that you include the NoScript add-on for Firefox.
Whereof one cannot speak, thereof one should be silent.