"NEW ORLEANS - Just three years after Hurricane Katrina, New Orleans confronts a new threat from Gustav and a stark question:
Will the partially rebuilt levees hold?
Despite $2 billion in improvements, including 220 miles of repaired, raised and replaced floodwalls, 17 new pump stations and more flood-resistant pump stations, nobody can say for sure the city won't be swamped again. And if it is, could it ever recover?"
http://www.msnbc.msn.com/id/26444204/
They didnt even fully rebuild the main defense against preventing this from happening again and they had 3 years to do it.
edit..I was responding to crockett