As of now STEEM has been frozen on Poloniex for the last 3 hours or so. The reason for this is unknown because I have been banned from Poloniex trollbox, for one day, after the extremely regretful harsh statement "sue their ass off!"
Any way, I havent seen any statement from poloniex yet, why this freeze happened, and even if they are aware of the freeze.
Sorry I have nothing more for you, just thought i tried to report this. Hope i get some votes :-)