If you recently been having random disconnections even though your connection has been stable for a long time, its time to check the weather, few thunderstorms been about recently, can and does cause ADSL to become unstable especially on overhead lines.
Just a heads up.
http://www.weatheronline.co.uk/ukukbli.htm this is a good site to keep an eye on lightning
Just a heads up.
http://www.weatheronline.co.uk/ukukbli.htm this is a good site to keep an eye on lightning