Just started to play around a little bit with the pinboard theme. Curiously enough in the standard menu bar the menus aren't deep enough. I put my twenty eleven child theme back so I can describe the problem. At http://www.martienvanwanrooij.nl in the menu there is a link "hobby's" - a sublink "koken" leads to "recepten" and underneath "recepten" you find some recipes. The problem is that in the Pinboard theme (or child theme) the links to these recipes are not visible anymore. BTW I call it "menu levels" but it is not a custom menu, rather the page listing that is done automatically both in twentyeleven and in pinboard.