CNBC - "Dubai World, whose slogan is "The sun never sets on Dubai World" has $59 billion of liabilities, its subsidiary Nakheel said in August, a large proportion of Dubai's total debt of $80 billion."
Over reaction by the markets IMO, suppose they are anticipating what the yanks might do, but usually the yanks like to do their own thing so wouldn't be surprised if they are only down 50-60 points at the end of the day.