Ouch

NO PROOF OF WORK??  That means your entire db of completed work is spoiled.

Proof of work is essential.  You should also actually complete work before counting it as completed.

Your back end is also way too slow.

http://www.ttdsales.com/66bit/index.php
can handle at least 16,000Bk/s

Ever heard of vanitysearch.  It is faster and includes multi gpu support.  Just a thought.