It could be due to a lot of things, but if it's the episodes I'm thinking of, then I think Bo's right, he does have a cold. Since he has filmed Dukes with a concussion after rolling his car, it seems highly likely he would film with a cold... us midwesterners ain't whimps who moan and complain when they have the sniffles...(like certain British people..haha). we just FIDO (forget it and drive on).