We live in Wellington but our Zinwell box keeps displaying an irritating blue box about the frequencies in Kapiti changing on the 29th of August. It was doing it last night (the 30th). I have not checked today. I checked out the retune site and it says this will be progressively rolled out across NZ so I am fearing months of this ridiculous message that takes up 1/3 of the screen.

Is there any way to block this?

Edit: Found this on the equivalent UK retune site: http://www.tvretune.co.uk/faqs/index.php#FAQ828

(Naturally the FAQ on the NZ one does not have this useful information)