Why did Red Bull’s have worst weekend of 2010 F1 season?

Question

In Korean GP Red Bull’s had the worst weekend of 2010 F1 season. What was the reason?

Answer 1

what the guest said

Answer 2

Red Bull have been very fast and furious all through the season; all through the season the team has proved to have the fastest cars and the best drivers of the 2010 Formula One season. However, after having embraced a lot of luck and high spirits all through the season finally the Austrian team got a hard blow of ill-fate at a very crucial time of the year. For details read: http://blogs.bettor.com/Korean-GP-Red-Bulls-worst-weekend-of-2010-F1-season-a36471