For about 5 months now I have been having problems with my internet connection. My original ISP, Orange failed to rectify this, so I changed to Zen Internet, who have sorted it after just 4 weeks
I live in a village, quite a way from the exchange, so I always new my broadband speed would not be the best, but I was happy with a 1mb download. Since Christmas this has just been a constant battle to get, with constant re-syncs of my router, and me getting 512kb more than the 1mb.
Orange sent a BT engineer to look.... no good!
Anyway, 5 months was long enough for them to sort it so I moved...
I explained my problem to Zen tech support, UK based as well

, and told him my modem would sync at 1152kbps, every so often, this is the minimum for a 1mb down load, but would then re-sync below this, so 512kb again. He explained it was due to noise on the line, and the length of line, but recommended I purchased one of these
http://www.adslnation.com/phpapps/ca...products_id=90
as my signal was distributed around the house, which resulted in some loss of signal.
Simple to change, took 10 mins, and I have connected at 1658kbps... half as much again
As this filters direct from the master socket, I have now removed all my old filters from all the sockets, as they are now not needed.
Only problem is that you can only use the master socket to plug in your router, but there are terminals to allow you to extend the clean unfiltered signal if required.
If you are having problems, or just want to see if you can gain any speed, buy one of these faceplates
Stuart