WASHINGTON (AFP) - Thai flooding will significantly slow the global production of personal computers well into 2012, analysts said Thursday, as the countrys huge hard disk drive industry struggles to its feet. Supplies of hard disk drives (HDDs), the most critical component in personal computers, could tighten by 30 percent in the fourth quarter, forcing PC makers to tail back production, experts said. According to industry specialist International Data Corporation (IDC), that could bring about, in the worst case scenario, a 20 percent cut in PC shipments in the first quarter next year. Thailands huge HDD industry, mostly located in industrial estates in the central plains, supplies about 40 percent of world market for the crucial memory components. The HDD shortage will affect smaller PC vendors and lower priced products most, like netbooks and the cheapest computers, said Loren Loverde of IDC.