Around christmas, my sync speed dropped from around 2500kbps to around 1200kbps.
I've got a Netgear DG834G v5 Router plugged into a microfilter into the master socket, and 1 phone plugged into the microfilter. No other cabling is attached.
I've called Demon numerous times, only to be told that it is deemed an "acceptable speed" for my line. Recent checks on other ISPs suggest a speed of around 2.0Mbps will be achievable (but they don't guarantee it!). I have some evidence from old speedtest history from 10th December 2010 where my download was 1.97Mb/s and it's now less than 1.0Mb/s, but that didn't really help with the argument.
The stats I get from my router are:
ADSL Link Downstream Upstream
Connection Speed 1208 kbps 595 kbps
Line Attenuation 48.0 db 31.0 db
Noise Margin 9.10 db 6.5 db
Any suggestions as to how I can get this back to an acceptable level?