I don't even know where to start with this one, so I pointed him to the faults.plus.net page
Here is some more info raimondo posted in another thread:-
I wonder if anybody can also help me ! I had the same problem since April - when my connection was upgraded to maxdsl - - since than - it keep disconnect - - and ive been left basically all on my own !
i took an image of router stats if it can be of help -