I have a course that includes external URL resources. I am running Moodle 2.2.1+ on Red Hat. When navigating between pages (I am using Davo Smith's navigation buttons plugin), in Internet Explorer, a small frame appears on the page which then expands as the URL page loads. As a result, the navigation buttons start out in the middle of the page and then jump to the bottom.
In Chrome and Firefox this does not happen.
Anybody have any ideas as to how I can prevent this from happening? Some people are very disturbed by this phenomenon.