Soaring gas prices are gone, for a time, but not forgotten. Charles Bronson, commissioner of agriculture and consumer services, and state Attorney General Bill McCollum announced an investigation into price gouging in the runup to Hurricane Ike, which hit Texas on Sept. 13. Consumers lodged more than 5,000 complaints about gas prices that rose as high as $4.64 a gallon. Gas stations said they were just passing on high prices being charged by their suppliers. On Tuesday, Bronson announced an investigation into a gasoline supplier, TransMontaigne Inc., a subsidiary of Morgan Stanley Group.