You should disable this option in Firefox or close all windows of our site before you close Firefox. While opening Firefox this option causes the overload of our server and you see forbidden message.
Well, from the context of Your text, I understand it to mean that You have limited Bandwidth and/or other limitations to the website, and then I respect Your positive response to this problem. The website is very good, and hopefully it will be even better, but you should think about better hosting, so that you don't need such limitations as a fale-safe for overloading them.
