How to deal with the freezing of Firefox while opening PDFs problem Often, users complain that whenever they click on a PDF file within Firefox, and the browser attempts to open the PDF within the main frame itself, it freezes up. This problem then requires you to restart your Firefox browser all over again – which is a serious headache. There are three ways in fix you can … [Read more...] about My FireFox Freezes When I Open PDF – How To Prevent It?