Non-pilot speaking.
Since the new interim report, a couple of people have asked "5 liters of water diluted in approx. 100.000 liters of fuel" and how that could cause the failure.
As I have understood it - that is not what is being suggested. The failure may have occurred because of ice and other particles resulting from the low temperatures. There has been much talk (in PPRuNE) about stratification of the fuel and that a 'dollop' of fuel thickened but not frozen.
Unless I much mistake, no one is saying that a small amount of pure iced water caused the loss of thrust. I sit to be corrected.