Can't be long until Poloniex are finished. Their actions seem to be very similar to exchanges that are about to fail:

https://themerkle.com/poloniex-solves-70000-account-balance-issue-after-reddit-complaint/

http://www.newsbtc.com/2017/06/24/users-cant-withdraw-funds-poloniex/

Those are other people's issues. I had a lot of issues myself and decide to switch to Bittrex for trading.