As of 7:30 p.m. EDT, web access to prwdot.org is still being blocked. I have not heard anything from Site5 in several hours. Apparently it was a PHP script that was causing the increased MySQL utilization, but they haven't been able to tell me specifically which one. Since most of the content on prwdot.org uses PHP, it could be just about anything.
I really hope that we can get this resolved soon. I apologize to anyone who is unable to access a website hosted at prwdot.org.
Update – The website should be totally unblocked now. Apparently some applications on the server were taking up too many resources. I have done some work to optimize things, and hopefully this will alleviate any problems.