What I have noticed is that some submenus work and others don't. Here is what I have seen. I use a template from Joomlashack. My site is
www.troop441.org I have a main menu with submenus that drop off of it (like Craig's). Some of the menu items have submenus too. The submenus that work have a page for the submenu item, and are not just a placeholder for another submenu (such as my News and Events menu). You see that page, and then a list of the submenu items. The submenus that don't work exhibit the behavior that the page doesn't change (such as the Scouting menu). This menu item does not have a page, but is instead a Joomla menu type External Link that does not have a link in it. This allows the menu item to just be a placeholder for another submenu off of it. Most of my submenus are like this. If there is another way to do the submenus that is compatible (without having a page for each one) then I would appreciate knowing it. Hopefully this helps find the error, or perhaps you can give me a better way to do the submenus that will work.
BTW, outstanding work on this product. I really like the way you have done this, and thank you for it.
www.troop441.org