I have used the Disable Breadcrumb Lists check box and it "works" somewhat... the problem, like in most WP situation is that it is not making the space it occupied go away.
I have the Nav Menu and I want my page image to be under it, not 3 cm below as it is now, but that's the case because all the function does it seems is making the menu invisible, not free the space.
Here is my test page:
You will see 3 cm between the menu and the image, there is no space at the top of the page. I start directly with the image.