The scariest business stories of 2011 – (From Bloomberg) The end of the world didn’t come on May 21–nor did the Oct. 21 back-up apocalypse.

(From Bloomberg) The end of the world didn't come on May 21--nor did the Oct. 21 back-up apocalypse. Still, 2011 has been full of fits, starts and frights. U.S. unemployment is 9.1 percent, housing pr…