Phil D.Long:Hi,
We're not aware of any general issues that would be resulting in this issue - outside of the usual increase in RF 'noise' at night.
This fills me with dread .. my downstream SNR drops through the floor at night. I've searched the internet (which immediately makes me an expert). It seems something to do with the ionosphere at night time boosting radio waves that interfere with ADSL (operates on the same frequency?). If this really is the case / cause of the issue (speculation) then I guess there is very little that can be done?
Not a great situation to be faced with when there are so many high hopes pinned on the technology.
Apologies if I've quoted you out of context.