The mystery over what was going on with the dollar the first week in August was solved by James Turk, founder of GoldMoney, who wrote on August 7:

"[T]he banking problems in the United States continue to mount, while the federal government’s deficit continues to soar out of control. . . . So what happened to cause the dollar to rally over the past three weeks? In a word, intervention. Central banks have propped up the dollar, and here’s the proof.

"When central banks intervene in the currency markets, they exchange their currency for dollars. Central banks then use the dollars they acquire to buy US government debt instruments so that they can earn interest on their money. The debt instruments central banks acquire are held in custody for them at the Federal Reserve, which reports this amount weekly.

"On July 16, 2008 . . . , the Federal Reserve reported holding $2,349 billion of US government paper in custody for central banks. In its report released today, this amount had grown over the past three weeks to $2,401 billion, a 38.4% annual rate of growth. . . . So central banks were accumulating dollars over the past three weeks at a rate far above what one would expect as a result of the US trade deficit. The logical conclusion is that they were intervening in currency markets. They were buying dollars for the purpose of propping it up, to keep the dollar from falling off the edge of the cliff and doing so ignited a short covering rally, which is not too difficult to do given the leverage employed in the markets these days by hedge funds and others."2

Full story here:

Wag the Dog: How to Conceal Massive Economic Collapse