Cryptsy seems to be lagging really bad. You can see the buy and sell orders aren't updating when the thresholds meet.
Yeah, very definite weirdness going on at Cryptsy - my DGC deposit didn't get automatically traded - it sat there as a trade waiting to be processed.. so I tried cancelling it (intending to trade it manually myself) and now it has disappeared.. not getting credited as an available balance.
Have submitted a support request to them.