What is interesting is that Rabbi Ovadia Yosef was quoted as saying Katrina was G-d's retrobution for President Bush supporting the Disengagement.
Was this a slanderous remark against P. Bush? NO,
Slander is defined as saying something that is NOT TRUE.

Can anyone prove it is NOT a TRUE statement?

Rabbi Ovadia Yosef gave a knowledgeably true interpretation of what "he believed."
Personally, "I believe" his interpretation is correct after taking into consideration the events that followed the statement of P. Bush... I've also been to New Orleans.:o
Don't take the kids to Burboun St.:eek

Sharon was the main player that carried out the Disengagement. If G-d sent a retrobution for P. Bush and for New Orleans for lack of Torah, why would He not send a retrobution for the man that carried out the Disengagement?????

The fact that a "cause and effect phenomenon" is forming in relationship to Israel and the Disengagement, I'd say tells a story.
These are observations and people can and will offer interpretations.