Got caught up on the phone whilst writing this, and in the meantime roseway has replied to me - so rather than edit it I'm just posting it as it was before I realised roseway had posted first!
Hi there Bog, and welcome to the forum
Nice to see we're being referred by other sites
The errors don't look excessively bad, to be honest.
When you say slow speeds, what are you trying to do? Is it just general net usage, or downloading P2P / Usenet etc?
Regardless, I would ask you to do some tests that are listed on Kitz's
slow speeds page, in particular post the results from the BT performance tester (instructions are about half way down that page under "check your IP profile")
Another couple of questions from me:
1. When you get slow speeds, does it happen at any times in the day, at all?
2. Is the wireless in the Voyager turned on, and are you absolutely sure nobody else is using it (neighbour hacked it, etc)?
I'd also like you to post your line stats after you've been synced a while and getting slow speeds, just to see what the error counters are doing then.
Perhaps some long shots, maybe, but we have to look at all the options first.