Thanks for replying, Philip. I'm hoping the faults on the Exchange side are greater than the faults on the copper line between the cabinet and my home. We'll see, I suppose.
Biggest fear is that the line is so unstable during first couple of days that DLM cripples the line for a long time, despite the claims that it adjusts up as well as down. Not my experience in the past.
This would be a pity, as I'm only sixty yards from the cabinet.
That being said, I'm not unduly concerned about a slightly lowered speed, as long as it's not falling over every two minutes, as I run a (small) home business.