Over the past couple of months my BT badged T2100 box keeps losing 30-50 Freeview channels all at once every week or so, including BBC1, BBC2 and ITV HD channels. All channels reappear on a retune. I get my signals from Emley Moor transmitter, and I know they are working on it. Is this what is causing my problems? Channels via broadband are not affected.