Whats the longest wait you've had for a transfer to go through. I used shapeshift late last night and it still hasn't come through. I just did another one and it went right through.
you are to be patient with the network this days as I experienced this same scenario about a week ago and my client get angry with me but finally after 24 hour my transactions went through. Because of the changes we are having due to price fluctuations especially the increased in price this day, transactions are very difficult to confirm, most of those using regular fees are having problem of confirmations. My friend also transfered fund to poloniex and it take about 2 days before he see the coins in his wallet.