YES same here my buy orders were ignored and now it has gone up 25-30% more , cryptsy will never handle big  volume markets, their script is obviously unable to cope.  I hear whispers of a QRK/BTC exchange coming anyway. It's past time we had a decent place to trade QRK. This is more than likely why people are putting in values above the market rate, because by the time their order actions the market rate that existed when they wanted to buy has shot past and you will not get any coins. You need to put a  bit higher than the market rate to even get a chance at your order being executed.