A small study on grain contamination is making it look like just because something shouldn't have gluten in it doesn't mean that is always the case. The follow-up piece just posted offers some advice, but its grim. Its clear that cross-contaminants are not being properly listed and the phrase "gluten free" or "not made with any gluten containing products" really doesn't cut it. I am not saying that I am going to start growing and milling my own grains but it makes me want to move to Italy or Ireland where gluten-free replacement products are subsidized, rather than putting the financial and information gathering burden on the consumers.
Found by way of The Essential Gluten Free Blog