What did the Fed do with $9 trillion?

Fed Inspector General can’t explain what happened to $9 trillion. The first two thirds or so of this clip deals with a ONE trillion sum. Then they move on to the nine trillion.

(I got this from Brenda Rosser in the comments section here: http://economistsview.typepad.com/economistsview/2010/12/roubini-fiscal-follies.html#comments)