volant: If he could have, he would have. Marking dead stones is a very hard thing for a computer to do and even the best go counting algorithms aren't perfect. In the two games listed, there aren't any dead stones (and in the second one, Gabby should have won, had she passed on move 34 and marked the 4 stones at B8 dead).

I think one or more referees would be a good thing for Go here, given the scoring issues that some games end up having, like the two Marfitalu listed.