my longest session was around 4 hours , I was playing a 5k guaranteed event, and it came down to last 3 players , and I was second in chips, then I have pocket kings and I went all in , and got called by k 10 of spades and he hit the flush. I got out 3rd and won 496$ , I was pretty mad at myself since the next pay jump was around 200$, but at the end of the day what can you do , when cards do not hold.