During the last several weeks, investment/speculative money has been fleeing long positions in commodity markets for agriculture, energy and metals. Looking back at corn, soybean and wheat futures markets with the clarity of hindsight, it appears that the long Labor Day weekend in early September was something of a watershed. On 4 September, the first trading day following that weekend, CME November soybeans touched a high of $17.835. The December corn contract hit a high of $8.1475, and CME December wheat's high was $8.94. Prices of the November soybean and December corn contracts have not traded as high again. Although the daily high prices for CME December wheat did exceed the 4 September high a few times later during that month, it ge...