My VM hub's normal white on light has been red for the last month. The hub itself is a little warmer around the top. It is in a ventilated area, I have rebooted it, reset it, and turned it off over night after 2 phone calls with VM and the advisor told me to do this. Still no white light has returned. I called VM again, and was told, it wouldn't be ok and leave it - I am not so happy with that, as we work half the week from home, I don't want it to suddenly stop working or overheat! The advisor said, she could send an engineer to look at it, but I would be charged as my internet was working so I declined the engineer. The advisor said the problem would rectify itself. It hasn't, is this ok to leave, and it will keep working ok? any advice, gratefully received.