Has anybody done any investigation on where these DDOS attacks are coming from [meaning who is behind them]?  I assume most come from insecure desktops on broadband that have been breached in one form or another.  It also seems to me that most broadband is from a relatively small number of companies and they should be able to log network scans and such [a little more difficult if people are being infected by emails, or browsing websites and accepting crap they shouldn't], but I think that there must be mechanisms already in place with major ISPs like AT&T, Comcast, Time Warner, the baby bells, and other (sorry, US centric examples) to help track down the origination of an attack and allow for prosecution.  In fact, it is in their own best interest to do just that to avoid flooding their network with undesired traffic. 

What I am trying to say is that something should be done to try and catch who is doing this.  Bitcoin is still small beans in the scheme of things, so the necessary forensics from large and savvy providers on up through the backbone should already be in place and thus such a repeatedly targeted attack of a small number of sites [since there just aren't many bitcoin related sites in the scheme of things] should result in catching script kiddies and even more sophisticated attackers. I would take great satisfaction by seeing this person or people or groups caught and exposed.

Anyway, good luck