Of course I do not believe them though. Been running this setup for 3 years now. Only difference is the modem models being upgraded over time. I have heard it is due to plant noise when you see a T3 time out error. Mar 24 2010 14:32:36 3-Critical R02.0 No Ranging Response received - T3 time-out;CM-MAC=xx:xx:xx:xx:xx:xx;CMTS-MAC=xx:xx:xx:xx:xx:xx;CM-QOS=1.1;CM-VER=3.0; "This is a communication error with your router. It is attempting to communicate with the modem and is timing out your connection." That was Charters response from a tech. When we lose connection. It lasts for a couple minutes or so. It does not do it constantly. This is the second time this week though. Any ideas? Charter cable internet Motorola SB6120 Router&FW in sig We also have their phone service. Ironically it was out as well when the internet went down. But that has its own modem.