Does anybody else find it disturbing that somebody who runs a Bitcoin exchange would run DoS tests on the main bitcoin network?
That seems like behavior that could be reported to his upstream ISP(s). If he was "testing" some little email service provider by trying to fill up all and keep busy of their SMTP server with bogus connections (here I'm talking out my ass, I have no idea if there is any DoS protection with SMTP) I think that'd be against any reasonable ISP's terms of service.
And if he's using a botnet... then what the hell is somebody who runs an exchange doing with a botnet?
He is a mediocre programmer and he and his team are responsible for lots of people losing tens of thousands of BTC in the Bitcoinica fiasco. Because they have not made any attempt to be cooperative, charges have been filled against them by some respected members of the Bitcoin community. Lawyers are now handling the case and hopefully they will go to court. They are also historically associated with Nefario, the GLBSE scammer.
Maybe a core programmer or developer can comment on what was found. But my guess is this: he has found nothing substantial and is looking for attention. Pathetic, but that is how we know Patrick.