Did you put this in your $ad_location[ad_navbar_below] ad area?
Code:
Vote for the hottest entries : Hottest Celeb in Santa/Winter clothing | Sexiest Babe in the Snow/Outdoors
If so that maybe your problem, remove it and see if that fixes it. Look for the template called "ad_navbar_below", take the additional links code out and it may fix this issue. If that does fix the issue then you may need to fix the code in that template so that it does not cover up the breadcrumbs.