New Wikileaks Release To Pose More Threats?

I saw this story by Haaretz Service and The Associated Press that I thought was interesting:

The Obama administration is condemning the expected release of classified diplomatic cables by the Wikileaks website and warning that it will endanger lives and interests.

State Department spokesman P.J. Crowley said Friday that the administration is continuing the process of warning governments around the world about what may be in the documents. He said the U.S. and its allies are bracing for what may be coming.

The release of hundreds of thousands of State Department cables is expected this weekend, although WikiLeaks has not been specific about the timing. The cables are thought to include private, candid assessments of foreign leaders and governments and could erode trust in the U.S. as a diplomatic partner.

While many are focusing on the possibility that these leaks may cause further embarrasment for America, as well as other foreign nations, I had thought the response from the administration to be interesting - like the previous leak, the government is claiming this new release "will endanger lives and interests." 

I can only ask this question: "Has there been confirmed incidents arising from the previous Wikileaks release?"

While the government is claiming these leaks will cause harm and embarrasment, it does not seem there has been any real harm, which leads me to believe they only fear the latter...