Roughly six out of 10 South Korean companies suffered direct and indirect damage from the recent financial crisis stemming from the U.S. credit downgrade and eurozone debt fears, a poll showed Thursday. According to the survey of 300 companies by the Korean Chamber of Commerce and Industry (KCCI), 61.3 percent of respondents said that they have had trouble running their businesses amid worsening financial uncertainty sparked by the fiscal problems in the world's biggest economic blocs.