Unless i am very wrong here but i think bitfinex is back in business and they are doing well right now.
That's s much worrying as it is surprising, I wouldn't touch them with a bargepole. I just hope that they aren't creating fake volume. I guess time will tell - but I certainly wont be putting any of my hard earned BTC their way.
Most Chinese exchanges are creating fake volumes as they have 0% trading fee. The Bitfinex might be an exception.