2007 Dubai? Pretty sure that was the match when she forgot the score.
I never saw the match either, but the score was 40-15 but Eva called it as 30-30 and the referee came out and had to fix it. It was a bit of a mess, and she said once in an interview (I forgot when) that it wasn't one of her finer moments.
EDIT: I FOUND IT! http://www.tennisnews.gr/inside-tenn...e/540-asderaki
This is a really abysmal Google translation but you get the point.
tennisnews.gr: Describe us your worst experience on the chair?
E. Asderaki: To race in Dubai and since there were several interruptions in the game between Jankovic vs. Mauresmo delivered this speech wrong score, when it was time for a mess that was resolved with the help of the umpire [referee]. It was a mistake that should not be done.