Overnight usage

[#1]

Overnight usage today is recorded as 61MB which seems a lot, given that no attempt was made to go online between midnight and 8am and that such usage is normally between 1MB and 2MB. It precedes a daytime usage today of nearly 6GB which is accounted for by a new OS instal on an old desktop which took an inordinate and unexpected amount of time.
I can just about accept the daytime usage which started at around noon but the preceding overnight usage seems bizarre.  Is there any possible connection between the two?

[#2]

Do you have any devices at all that may operate overnight, possibly in sleep mode?

I'm somewhat impressed you've remained on the same package for so long.

Matty

[#3]

No, I have no such devices.

Could I press you on your second sentence. What is the 'same package' that I've been on 'for so long'? What leads you to be 'impressed' by this? 

Thanks.

[#4]

You are on a legacy package that offers usages of up to 10Gb per month which we haven't really offered for a good three years now. It may be worth moving to unlimited at this point.

Have a word with our customer options team on 08000132632.