With a heavy heart, I have decided to void results for 25 October. They will not be included in rankings, nor used to determine participation in the quarterly playoff.
I did this because several players reported that they were unable to play the quiz, and we know that the site was unavailable for at least four hours - and maybe more, since we are unable to pinpoint the exact time the site became unavailable.
That was a very frustrating experience, waiting and waiting for Amazon Web Services support to take action. Finally they did (thanks to John Scott's prodding) but by then the damage was done.