It seems obvious to me that Unicredit has frozen their account, yet most seem reluctant to accept this possibility. All it takes is one bank employee to press a button.
Even if that was the truth, after investigation by their bank they must come to the conclusion they aren't doing anything illegal by running a bitcoin exchange. Yes they were missing the proper licenses, but surely this can be resolved by mtgox actually getting them and maybe paying a fine to the authorities. So I think in time, their accounts will be unfrozen.