Mario stopped taping shows for FoodTV some time ago. they have been showing reruns for some time.
What I heard was that at contract time, he wanted the network to keep his half hour show and they only wanted iron chef so he walked.
As a matter of fact, I heard a similar story about Emeril.
I can't vouch for the truth in either of these statements but that's what I heard.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan