We’ve recently received word that some of our ads were appearing over our post content. The problem seemed to happen only on Internet Explorer 7 and was intermittent.
The source of the problem appears to be that the style for that component of the page did not explicitly set the width and IE took the opportunity to randomly increase the width to 100% of the browser width.
I’ve updated our stylesheet to explicitly add a width for that page element. The problem, like my love for IE, appears to have gone bye-bye. If you still see the problem, clear your browser cache and reload the page.