online view, local preview and ms ie 7 browsershots dont show any errors, but at my friends house ms ie 7 shows this: instead of this:
after the erronous visualization i have added a .clear above the .presentation's and i havent gotten her to send me a new screenshot afterwards

does anybody know what is going on?

(i know there are other ie 5x and ie6 problems but i will request help on those later)

the actual page is

maybe i should also mention that i get the quirk in local preview too, but only for the top image, and only before i allow blocked content or before i refresh after having resized my browser window