Sensex tumbles over 451 points on Dubai’s debt worries Sensex tumbles over 451 points on Dubai’s debt worries Source: timesofindia.indiatimes.com Sensex tumbles over 451 points on Dubai’s debt worries     Yo Dubai. Get your shit together. My stock portfolio is taking a hit because your bubble is bursting.    By arZan ... View all of arZan's posts.