WASHINGTON (AP) -- Demand for big-ticket manufactured goods plunged in August by the largest amount in seven months, with widespread weakness signaling a slowdown in the nation's industrial sector. The Commerce Department reported Wednesday that orders for durable goods, everything from commercial jetliners to home appliances, fell by 4.9 percent in August, the biggest decline since a 6.1 percent fall in January. It was far larger than the 3.5 percent drop that economists had been expecting and resulted from across-the-board decreases in a number of categories. The concern is that the steep downturn in housing and turbulence in financial markets...