I think this is 3rd or 4th Poloniex related problem I read this week. Bells are ringing for them.
I think it's time to leave Poloniex, we may see a new Cryptsy, Mintpal etc. issue.
Wow this is indeed bad they are one of the top in the industry,I am not using all of them I only used yobit and hitbtc hopefully these two sites have a rock foundation and have a smooth business,it's quite risky to put a lot of money on coin exchangers nowadays you really need to diversify