It is a symptom of a slow moving market that many investors go back to the safe haven that is the gold standard. It is, quite simply put, the simplest investment to understand, and the commodity the least likely to be subject to sudden drops. The price has been steadily climbing in the last five years, and while not as spectacular as the oil industry, those who invested in gold bank in 1997 have made a considerable profit now.
That Fort Knox is increasing its reserves means only that the US Government (or more accurately, the Federal Reserve bank) is preparing for the long haul. Increased reserves in the reserve bank mean bigger balance sheets for associated banks, meaning more available loan and credit. Teardrop on a wildfire, but at least it's an attempt.