In all of these devices, whether they use HTML 5 by default, or because I point to them at the story_html_5.html file, The pages load slowly, the layer on screens go out, navigation based on triggers and conditions aren't respected, pages won't load at all or drag and drop functionality doesn't work. This happens to a greater or lesser degree on ALL of the devices that support HTML 5 that I've tried - but not one would be considered usable from a client's perspective.