Okay here's the deal. I have installed switchproxy addon into firefox. I got a bunch of working proxies from proxy-heaven. How do I know they are working? I used Charon proxy checker to check them, and they are working. So I uploaded the txt file with the proxies to switchproxy, and when I activated the addon, my connections failed. Also, when I tried to visit a web page with the proxies, I would get this I do not believe the problem is associated with switchproxy. The addon works. I do not believe the problem is with the proxies. I checked them with Charon, and the proxies were just released today. I believe the problem is related to my internet settings or browser settings. I am running on Comcast Cable internet. My internet connection runs through a router. I also tried wireless and direct connection, but neither worked. If you can solve my problem, $5 to you.