ADSL2 is supposed to have several advantages over ADSL1 for long lines so I'd be surprised if its faster - but there's probably no harm in trying to set your modem to ADSL1 only as MrSaffron suggested and seeing which way it goes.
I note your connection speed is 1391Kbs-1
. If you're on a non-LLU ISP and subject to BT's IP profiles you'll be on the 1Mbs-1
profile and just missing out on the 1.25M profile by 50Kbs-1
your line is otherwise stable - ie just slow and no frequent drop-outs and your modem allows tweaking the SNR margin a very slight tweak (say, to a margin of 5.5dB or 5dB) would probably allow you to hit the 1.25M profile which is a 25% increase.
Of course if you're already on a LLU ISP this won't apply.
Edited by mr_bean (Mon 21-Nov-11 17:10:27)