Oil refineries and rigs along the Gulf Coast escaped the major damage that followed Hurricane Katrina, and oil prices dropped to a five-month low. But Kevin Kerr, MarketWatch contributor and editor of the trading newsletter Global Commodities Alert, reminds us that this is just the start of a busy hurricane season. He says we’ll feel the effects of Gustav: the hurricane has caused evacuations and power outages, and that means oil production slowdowns well into next week.