I understand, thank you. I know there was some work being carried out on a green box near me when this problem started to occur; it's a shame its very intermittent though as from past experience i seem to get unlucky and the tech will turn up when it's working and say no fault is found.
Ps, Is there anyway to force restart/reset the connection once it drops? I couldn't find a reset switch on the router, and turning it on/off doesn't help. Sometimes it's out for 5minutes, others 5hours.