There was just a big cock-up in the WSOP Event 40.  The players were on a break, and staff went around the tables to do some chipping up.   However they managed to chip up the yellow and blue chips the wrong way around, doh, and completely messed up the stacks at the tables.

About an hours play was lost whilst they corrected the mistakes, and some frustration grew amongst the players, who just had to sit around waiting.