The CSS layout on my Drupal site was suddenly found to be broken in IE 7 & 8. No idea what happened to cause this, but the strange thing is, if I save the source/files, then upload and test as a static page, it works fine (well, good enough for Internet Explorer). I'm using Adobe BrowswerLab to test. I've turned off caching in performance and boost. I have also turned gzip compression off on the server, and added 10 second delay to browserlab load-time. Nothing seems to make the CSS work straight from the actual site. I haven't found any threads about this specifically. Does anybody know what might be going on?
I am using Drupal 6.24.