Actually the credit rollback occurred not because AQUA was dishing out more credit than many other projects.
The new BOINC server code didn't mishmash too well with AQUA's applications, causing it to dish out hundreds of millions of credits for SINGLE WORK UNITS!
Unfortunately the only way they could fix the problem was to roll back EVERYBODY's credit to the 19th of June, regardless of whether or not they had crunched one of the workunits that resulted in the crazy high credits.
I lost 607,178.34 credits unfortunately (of legitimately crunched WUs), but as I said over at AQUA, the sun will still rise tomorrow morning! There are more important things in the world than virtual credits..