Hi all
Someone with the same problem as me. I am down in Northampton. I have the motorolla surfboard sb4100 modem and mine is doing the same, randomly disconnecting.
All lights are on, surfing the net just fine and then the receive light starts to flash, the online light goes off, send light goes off and no more internet connection. Sometimes comes back online by itself a minute later other times I have to reboot the modem. Spoke to Ntl three times over the weekend and once online each time "no fault with your connection sir", they are now coming out next wed to have a look.
My problems started last thursday. It even looses connection when the pc is turned off.