TWC must have been doing some work overnight, showing a 5hr outage in my town. All part of the MAXX upgrades as my cable modem is now showing 16 channel downstream.... Just got off the phone with the Signature@Home reps after getting everything fixed up.

It did mean an IP address change, so I had to change the DNS for all the sites. Everything should be working now. Tech did say that I should have the MAXX speeds by end of August at the latest.