When you asked me if I used a router, I decided to take the router out of the system and connect my computer directly to the cable modem. And the router is the problem. Firefox now works as it usually does. Thanks for reminding me about the router. I didn't even think of that because my voip lines were working great connected to the same router. I connected my computer back up to the router but with one of the unused sockets. It works great now. Thank you, James, for your assistance.