AOA, IN my opinion the most effective method to make it transparent is to forward a mail to chairman nab stating our concerns about the test on 12th august 2012, and forwarding the same to the rest of email addresses.
These email have been taken from the nab website and they are very much functioning.
I have tried this method before and the immediate result was the article in the newspaper by nab official regarding recruitment criteria.
I urge everyone in the forum to send an email today to chairman nab and making all others CC. i am very much sure, our concerned will be addressed.

1.chairman@nab.gov.pk
2.infonab@nab.gov.pk
CC:
3.sindh@nab.gov.pk
4.punjab@nab.gov.pk
5.kpk@nab.gov.pk
6.balochistan@nab.gov.pk
7.rawalpindi@nab.gov.pk