C7100V on Xfinity with connection isues timeout and resets? Replacemenr modem too!

After tiring with the rental that I had from Comcast, I started my research and based on having Triple Play and the area I am in, I had one choice.  The Netgear C7100V Nighthawk Wifi Cable Modem Router.

I had issues since day 1, but up until a few weeks ago I couldn't really blame the device since I also set up a home network that consisted of three additional Wifi routers that I was using as 'hotspots' and also to use them to provide wired connections in various parts of the house.

So I finally got things 'clean up', reset all of my hardware to default and I was cruising along for a while with the NightHawk being the 'main' device, i.e. providing DCHP services.

However, I will eventually get the call from one of my family members that 'the Wifi is down' and when I make it home, there is my NightHawk with the 'Tel 1' line blinking.  I have to do a hard restart and then things usually work.  As others have mentioned, this usually only last for at most a week?

I do have the latest firmware and I also took the plunge and had a 'surge protector' for the house installed.  (That was for other reasons, but side note, it was well worth it.)

I also went through the blame game between Comcast and Netgear, but now my warranty is up and i would have to pay to get Netgear involved.

So I am sorry that I have not found a solution yet, but I did want to let everyone know that there are those that have the new firmware, but still have what seems to be the same issues.  I have not taken the time to look at the event log since the reboot is usually pretty quick and after being in the I/T business for over 25 years, I guess I have developed a level of 'don't really care if a reboot works' mentality.

Looking forward on hearing if anyone actually figures out a solution, but after reading this thread it doesn't look promising.

Take care.