Actually, now that I look properly at your OP, I realise that your attenuation isn't that high, and you should be getting decent speeds -- seems more like your phone line itself could be wonky. Do you get crackling on the voice line? Have you plugged the BeBox into the test socket to see if you get better performance?

I would give Be another week to settle down as it plays around with your line for the first 2 weeks to get the best settings for you.

Also go and browse the Virgin Media forum. Just looking at the first few Subject Headings doesn't look like a happy bunch.

Well spotted. The OP is asking and we are all answering the wrong question.