Here's an example of what I think must be a single users activity impacting the local network. Look at the step change at ~ 2:00am. I had no overnight downloads running although there could have been some small automated FTP uploads and possibly some other upstream activity at any time. I kicked off a download at ~ 6:30am and the impact of that on my own router can clearly be seen - I don't know if other people's monitors would show the same or not.
