for a while I have had very slow internet and have trouble connecting to alot of sites. johnr said about line figures. Wasnt possible to get any diagnistics from my old Belkin modem. I now have a brand new Vodafone Wireless Broadband modem and now it is even slower. the diagnostics for adsl are as follows.
upstream downstream
CurrRate(kbps) 1171 15359
MaxRate(kbps) 1208 15620
NoiseMargin(db) 12.7 12.1
Attenuation(db) 11.0 4.0
Power(dBm) 12.8 0.0
Sorry these dont mean much to me so dont know if okay or not. I have vodafone naked broadband, single line, no filters and nothing else connected.