So, not too long ago I moved over from Virgin Media and was very happy with the quality of the connection here on Sky Connect.

Heres a sample of what I was getting:

1 1 ms <10 ms <10 ms myrouter.home []
2 23 ms 23 ms 23 ms []

Now, recently (say, the past week) my latency has reliably increased from the nice 20ms to a constant 40ms.

1 1 ms <10 ms <10 ms myrouter.home []
2 44 ms 41 ms 41 ms []

Admittedly it's a small increase and still good compared to Virgin Media's offering of 80ms, but I just wondered if there was any explanation of why latency had gone up by 20 and stayed there?

ADSL Link Downstream Upstream
Connection Speed 7616 kbps 448 kbps
Line Attenuation 15.0 db 9.0 db
Noise Margin 12.4 db 24.0 db

Those stats are pretty much the same as when I had 20ms. The only difference is that "Noise Margin" Downstream is now up by about 1db.

Any clues?