One Year Later: What has changed, and what hasn't

A year after Lehman Brothers declared bankruptcy and turned a credit crunch largely confined to Wall Street into a full-blown global economic crisis, it's worth considering how much has changed -- and how much hasn't.

Notwithstanding last fall's headlines declaring the death of Wall Street, it's easy to find old problems that are still simmering, as well as recent changes that may or may not be for the best. For a review of some of the key changes in the financial world in the last year, see below.