Guys, I think you'll find that the white box is an anti-piracy device. It has always been on the bottom right on Sky Sports F1, but has now propagated to the bottom left on other Sky channels.
It works like this, if someone recorded a program from Sky, burnt it to a dvd then sold the dvd on ebay, for instance, the the Sky lawyers can point to the box and say "we know where you stole that from". I've also seen what looks like a beer glass on some channels - especially on extracts from Sky Sports on BBC TV.
We all suffer for the naughtiness off the few.
