I support scoob's idea, starting with 10 min, then 15 min after a few reincidencies, then 20 min, etc. It allows the emergency leaving without punish, as it should be, and the perps would be affected. BTW, dummy should be included, if you bid it, watch your partner play it. Time to leave would be before your first bid on a given hand. 10 min is small enough to not be a big problem, but big enough to make leaving pointless I think. Oh, people under this ban would be uneligible to play tourneys, even if registered.