DDoS acts are criminal acts, mostly with a purpose. You don't need to piss so. off, this is a natural behaviour in our wrecked world.... Deepbit needs to take some prevention to lower the risk of being shut down by malicious minds.....
This whole bitcoin thing needs to develop legal character, so that we can invoke authorities when something like this happens.......
You can still "invoke" authorities , it doesnt matter what you host but the mere fact that the someone is DOS'ing the server is criminal enough on its own.