Cheers for the message and for the first time too, it's great to see a nerw face!
I'm sorry to read about the box rebooting, I can see from the outright that there is a bit of an issue on some signal levels in the box and also on other services you may have in the home.
There are no known outages that may attribute to this so an engineer would be ebst as I'm not able to resolve this one from here. If you can have a little look inside your 'Inbox', you'll see I've sent you a 'Private Message'. You can find this at the top right of the page, purple envelope