I have exported PDF files to be uploaded to Firefox. When they are uploaded all drop shadows etc. turn blocky. Some fonts do not appear correctly. It is not always the same font and it will just be one line out of a paragraph. It appears to be that Firefox is not handling "over print" correctly. It views perfectly fine in Safari, Chrome, and IE. We have all tried viewing these pages in Firefox and some of us can view them fine, even those of us that are using the same version and operating system etc., one persons will view fine and the others not.