If you take at a look at http://it-teacher.co.uk/tea/ you'll see what I mean. I'm working on a redesign for our village website (the content of this test site is rather random).
The real site has a two line menu. In Atahualpa the drop down menus from line one drop down over the second line and are clickable. http://muchmarcle.net
In Montezuma they appear to drop behind the second line and can't be accessed.
The obvious - which is put all the drop down items on the second row - won't work as there are too many to fit on the second row.