Therefore, the Bitcoin exchangers have many anti-fraud filters and sometimes they have false positives.
Also many banks don't want to provide bank account for exchangers - see Bitfloor.com:
The ETA for receiving the check is around 10 days. Until then, we will be unable to make any further payouts. We are exploring various options for returning your funds.
Also Mt. Gox have problems to open bank accounts and complain about this on their Facebook page:
1) We would love to process every withdrawal immediately, but our bank has daily limits imposed on us
2) We have succeeded in raising this limit already, but high BTC prices make this more of a challenge
3) As a solution we are always seeking higher limits, but also exploring other options for SEPA withdrawals to expedite the process
4) HOWEVER, if you are in a rush the best option is to cancel the SEPA and ask for an "international wire" from Japan.
Thank you for your patience, and please rest assured that we are working hard to alleviate the delays.