Just a few more results :
From Robin Walkers on-line speed test :
1st 128K took 531 ms = 246840 Bytes/sec = approx 2054 kbits/sec
2nd 128K took 532 ms = 246376 Bytes/sec = approx 2050 kbits/sec
3rd 128K took 531 ms = 246840 Bytes/sec = approx 2054 kbits/sec
4th 128K took 547 ms = 239620 Bytes/sec = approx 1994 kbits/sec
And from ADSLGuide :
Downstream1833 Kbps (229.1 KB/sec)1979 Kbps (inc. overheads)Upstream187 Kbps (23.4 KB/sec)201 Kbps (inc. overheads)
So I THINK I've sorted it myself.
Homealone - thankyou for the link to Robins "Tweeks" section ... that's how I found all this stuff.