Ahh well basically here is the whole story of my internet connections and the problems i have at the moment..
I had 512kb/s from BT for quite a few months after upgrading from dial-up, about 6 months i had 512 for and it ran strange until i re-installed the whole BT Broadband package and i never had any trouble with it ever again.
Upgraded to 2mb and had that for a month, no problems, no disconnects, nothing. Had that for like a month before the thought of 8mb tempted me to upgrade again (plus it was only like ?2 extra with BT).
Upgraded to 8mb, connection was dropping late at night on the very first day and has continued to do so to this day. I had got in touch with the BT desktop tech support after 10 days and they said to wait for them to finish testing the line for the maximum speed it could handle (the test takes 15 days). So i said okay and let 15 days pass, then 20, then 25 and so on and so forth. Each time I got in touch with them either via the desktop help or over the phone i always ended up speaking to some indian guy (who i must say was very professional and polite) who kept telling me the same thing over and over about electronical interference.
I made sure there was nothing electrical interfering with my connection and went back to them. He suggested I phone up BT and speak to them and he gave me a smart code. Gave my smart code to the guy on the phone and he did a line test which brought up no problems and he then said he had no idea about what to do.
So thats when I started scouring google for answers and came across a few sites including this one. I found out what I think is the problem. Its low SNR. My connection ONLY drops after 11pm at night, it doesnt even flicker during the day. After 11pm i can expect connection drops at least 3 times every 30minutes, sometimes more.
My SNR stats look like this at 1.10am in the morning:-
http://img220.imageshack.us/img220/2553/snraw4.jpgAnd my local exchange is literally 200metres away
(
http://www.samknows.com/broadband/exchange.php?ecode=SWLJ)
I am in the process of ordering a new Netgear router (I currently use a BT Voyager ADSL 205 router) and apart from that I'm not sure what else I can do.
Thanks.