Fed's overworked printing presses break down

"An official familiar with the situation told CNBC that 1.1 billion of new $100 bills have been printed, but they are unusable because of a creasing problem in which paper folds over during production, revealing a blank unlinked portion of the bill face.

A second person familiar with the situation said that at the height of the problem, as many as 30 percent of the bills rolling off the printing press included the flaw, leading to the production shut down.

The total face value of the unusable bills, $110 billion, represents more than ten percent of the entire supply of US currency on the planet, which a government source said is $930 billion in banknotes. For now, the unusable bills are stored in the vaults in "cash packs" of four bundles of 4,000 each, with each pack containing 16,000 bills.

Officials don't know exactly what caused the problem. "There is something drastically wrong here," a person familiar with the situation said. "The frustration level is off the charts."" -source

Well at least they've recognized that there's a problem. The first step to any addition is to admit that you have a problem right?