No
Everything was disconnected, there was nothing connected via wifi either.
The only thing that was connected to ANY superhub was the seagate NAS drive which i'd unplugged from my SH to the test SH, as you can see from the graphs.
I'm trying to google my issue to see if anyone else has had any problems with that particular NAS drive and virgin, or any other router/modem... I can't find anything though. Frustrating!