Hello,It looks like the data() method is not working "as expected" when usedwith elements from another frame (or iframe).Let's say we have an iframe. If we say inside it something like:$("body").data("test", "test");Then trying to read it from the parent window like:$("body", frames[0].document).data("test") returns "undefined".As far as I could see in the code, the data itself is stored in$.cache which seams window-specific ...