http://www.ft.com/cms/s/0/0c82561a-2...nclick_check=1

quote

Moody’s awarded incorrect triple-A ratings to billions of dollars
worth of a type of complex debt product due to a bug in its computer
models, a Financial Times investigation has discovered.

end quote

This article has also been slashdotted.

I'm sure this wouldn't have happened if only the experts here had been
consulted, because such things never happen to them, and free markets
fix all problems.

It just *happened* that this error was timed to contribute to the debt
bubble, and the discovery of the error time to contribute to the
collapse. Oh, well. People get hurt, often through their pension
funds, but, you know what? Software happens.

Robert.