Someone emailed me this as being the problem for the Freshblue navbar:
Your navbar is set to position: relative. Absolutely positioned
elements (such as the dropdown menus) are positioned from the start of
an already positioned container block. To fix it you need to move the
menus outside of div#vb_navbar.
Dom.S, I how this will help fix the problem with the Navbar and the Notification drop down box as well.