"At BT, we are committed to giving our customers the best levels of service and that includes the speed of your broadband connection. We have invested in a new broadband network that will help us offer faster speeds and we will be transferring your BT Business Total Broadband service on 016********8 over to the new network on 28/08/2012"
On the morning of the 29th speeds did increase from a rock steady 6megs up to around 12megs. but during the afternoon the speed decreased to a miserable 2 megs and settled down to 5\6 megs since. I use a Billion Bipac 2300N router which is ADSL2+ capable.
Is there an explanation as to why this might be?