What line stats is the router reporting?
http://www.kitz.co.uk/adsl/frogstats.php#top
I hope you can make some sense of this! It's the best copy I can make so far as I couldn't find our how to put a screenshot on this forum
System Up Time 02:53:00
Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WAN PPPoA 87263 107955 0 798 13114 02:52:20
LAN 10M/100M 109215 88936 0 13271 827 02:52:42
WLAN 54M/65M/150M 2177 883 0 36 13 02:52:45
ADSL Link Downstream Upstream
Connection Speed 1216 Kbps 448 Kbps
Line Attenuation 61.6 dB 31.5 dB
Noise Margin 13.4 dB 15.0 dB