Being somewhat obsessive compulsive, not only have I played GC since it began, I've also kept statistics on my scores etc.
I played the first set when it popped up on Monday, and both sets on Tuesday. This time around I'm playing Hardcore, and I do the Impossible quiz in each round.
So when I logged in on Wednesday to update my spreadsheet and play the next set and it told me I had only played 10 quizzes, I was a bit surprised - particularly since others have played over 20. I know I played them all.
Also, this time I've not been given any point - not even fractions - for the Impossible. In previous GCs (including those where I played Hardcore) I've always got something... however meagre....
I'm not even trying to win this one as I'll be offline for a week or more soon, but it did seem strange that the games weren't registering.