Play stopped at Table 40 moments ago, because a player noticed that a card was marked. It was a deuce - one of the more important cards in Omaha Hi-Low Split 8-or-Better. Players at the table then began sharing theories about a situation at another table in the Brasilia Room.
According to a player who identified himself as "Darren," Table 61, which is now broken, had to stop nine times earlier because of marked cards. To no surprise, the marked card was always a deuce. At one point, a floor person stayed at the table and examined all four cards from each player after they mucked. No one was caught to our knowledge, but the players at Table 40 are still talking about the issue.