If you republish a page and it looks different in the browser than it did in iWeb, try clearing your browser cache. Otherwise, you may notice things like missing media, or objects (such as text) from your old page that still appear on the new version of the page.
To clear the cache in Safari:
If you use a different browser, check the browser's Help or other documentation to see how to clear the cache.
This document will be updated as more information becomes available.