Here's a group blog from New Orleans.

And this is from the Times-Picayune's blog (they can't put out a print edition):

Ant balls not an urban myth

In addition to all of the other horrors befalling New Orleanians during the flood was the creepy discovery that red ants form themselves into floating clusters to avoid drowning. As Dante Ramos and I paddled along Carrollton Avenue on Wednesday, I saw two glittering, golf ball-sized masses of ants floating beside our canoe. - Doug MacCash