I've checked their ANN thread and "everyone" is saying the same thing: their withdrawal is blocked for X and Y number of time, that's crazy. Their rep has this to say:
FYI - we are still in beta and we are processing large withdrawals manually - often after a review, which may take some time.
We apologize for the inconvenience.
Even though they are in beta stage, it is still unacceptable to hold people's funds for this long, because if they do eventually get their coins, they are definitely not going to use the platform again. You can only hope they would get to your withdrawal eventually, how long it would take is what nobody knows.