I bought a set of Lodge individual casseroles a while back. They come "seasoned" from the company, but I also baked and oiled them prior to use. I have made a bread pudding, a macaroni and cheese, and a fruit crumble in them and everything I make tastes HORRIBLE like mix of irony-chemical and almost burnt-plastic. If I wipe down the inside with a paper towel after rinsing, the paper towel turns grey/black. I hadn't used them in a while and made the fruit dish last night and thought "My bad, I shouldn't have put fruit in there- too acidic!" But then I realized people make pineapple upside-down cake in cast iron skillets all the time.
What do you think? Toss 'em? I think I got them on sale, but they are darned cute, so if it's just a matter of doing something to reseason them it might be worth the effort.