It seems that once in a while, English user flags are replaced by ''Olympic flags''. Even worst than that, I've seen a player with 2 different flags at the same time. The player hjekshdf 9d had an American flag in the player list, but he had an Olympic flag in the game list....
Also, when we use ''find location'' on an English user, we see the Olympic flag.
I sent a screenshot of this problem by email.