I would say one of the worst moments is when Fortune Jack increased their minimum withdrawal limit to 0.1 BTC without any prior notification i would consider that the worst moment if you are rolling who uses a low bank roll because the site does not have a deposit limit but still want to control it with the withdrawals. 
That was worst until FortuneJack made and official statement about their action. If you haven't read the statement yet, here's the link below.https://bitcointalk.org/index.php?topic=774929.msg18051548#msg18051548
Also, I quoted this important statement to clear your doubts
Withdraw limit will be updated on Monday at 9:00am server time and fixed on 0.01BTC