Sometimes we lose sometimes we win ..that's how life works
https://bitcointalk.org/index.php?topic=208986.msg11565482#msg11565482This is the reason
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This isn't too uncommon, if you are placing thousands of rolls you are likely to hit a streak like this at some point. There have been over 12,000,000 rolls the past 24h and there were probably loss streaks longer than this and win streaks as long as well.