[WarnersEnd]

Well that's interesting. Just spoke to support, apparently it's over-utilisation of the cable. (Our cables were installed by Telecential decades ago). We will suffer low speed connection in Warners End, Hemel Hempstead until August! Got a refund for non delivery of the promised broadband performance plus a free superhub is on it's way, but presumably that won't deliver much in the way of benefits until August.