Spread this information: Do not make MintPal -> CoinMarket.io deposits!
They are making nonstandard transactions to save from network fees or idk why. Its idiotic, actually.
Please learn how to handle transactions properly before you make any comments like this. Sendmany is a far more efficient way of handling multiple transactions in a short time frame.
We have not experienced such problems with any other deposit methods, including btc-e, cryptsy and others. It's just you.
It's bad karma for taking your volume.