Just to make you aware (if you didnt already know) my folks have been without internet for 7 days now, having contacted NTL tech support on Sunday night, they agreed to send an engineer.
He arrived this morning and it took im 30 seconds to tell us what the fault was.
We have had NTL internet for the last 7 years and use the original modem, NTL have changed their network configuration just over a week ago and the Terayon modems no longer work with the NTL network.
He advises that they are replacing them as and when they have to visit customers, but NTL have not advised customers of this change.
If you have a Terayon modem and your internet stops working all together (cable light flahes slowly for 60 seconds then goes off), give tech support a ring.