Featherz is right.

carb options peanut butter - contains partially hydrogenated oils

I think some people are under the assumption that it contains very small amounts of hydrogenated oil. I'm skeptical. Hopefully when/if the FDA ever puts trans fat labeling regulations into effect, we'll see the truth. Or maybe they'll just make the serving size reeeeeally small so that it comes up 0 trans fats. Grrrrrr.