in case you also followed the news outside of bitcoin, it kinda looks like the Russians are still mad about Cyprus or something... Almost any big financial institute is getting hit or has been hit over the past two weeks...

The only way to counter DDoS is setting up a fully decentralized system, which I do not believe possible with FIAT currency involved. (you would still see a couple of big hitters, taking 80% of the load, and those go down during a DDoS, you get the picture)