Interesting article, which might have some longer term ramifications to bitcoin's security.

 "Now, Lockheed Martin — which bought an early version of such a computer from the Canadian company D-Wave Systems two years ago — is confident enough in the technology to upgrade it to commercial scale, becoming the first company to use quantum computing as part of its business.

Skeptics say that D-Wave has yet to prove to outside scientists that it has solved the myriad challenges involved in quantum computation. "

http://www.nytimes.com/2013/03/22/technology/testing-a-new-class-of-speedy-computer.html?pagewanted=all&_r=0