(Community Member)
There seems to be a wide-spread overly optimistic assumption that Ritz Crackers are pareve and that the OU-D designation simply refers to the fact that it was produced on a dairy production line. I have seen several people take this for granted and consume Ritz crackers within a meat meal.
I personally contacted the O-U and was told that these crackers contain real dairy ingredients! See the ingredient list below. (Ed: you may also wish to check out “No more fudging the facts” about the Oreo dairy controversy too. Also check out a great web article on deciphering ingredient labels to figure out which ingredients are dairy, but please do not use to permit foods for kosher concerns).