My brother just switched fro Comcast to Fios. I guess they did some sort of upgrade that made both of his digital cable boxes to go nuts. They called Verizon and then neither cable box worked. I'm in the Cherry Hill, NJ Comcast headend and with all the years of having digital cable, this has never happened to me. If my box goes nuts, unplugging it and plugging it back in has always worked. The only thing that was working is Verizon's analog feed which is only broadcast channels.