[sadken]

I have recently upgraded to the 10mb service and initially was getting crazy download speeds of 2.1mb a second on good sites like NVidia.
Lately this has dropped off alarmingly to the extent I couldn't even surf the web the other day due to the slowness.
Download speeds now vary between 80 and 250kb a sec.
Not really what I am paying the extra for.
Has anyone else experienced this problem?
My mate who lives up the road tried the same download as me earlier and he got over 1mb a sec for a download I was getting 200k on.
I rang tech support (India I think) yesterday and he said something about me being on the 'wrong server'.He made some changes after I gave him my IP addy and improved for a while but back to ****e today.
Also, when pinging the cabel modem and checking the diagnostics, these details were showing:-
Downstream Receive Power Level : -16.4 dBmV
My m8 reckons it should be about 2 to 3.
This never changes on mine.
Is this the problem?

Thanks for any help offered.