I did an online chat with Verizon today and they reported this below: Verizon In Home Network / Engineering have reported that customers who have a combination of Cisco STB(s) and an Actiontec Router may experience periodic, random Router reboots. All models of Cisco STBs and Actiontec routers are affected at this point.
So the fact that I have both in my home means that they can't or won't do anything until they have a solution as they don't have other models of routers available except ones with much slower speeds and there is a limited supply of other STB's.