HTTPS Everywhere 3.5 (FF 28) freezes browser when clicking javascript links
Pages that have linking using javascript: links cause the browser to lock up when you click on one of them. Most of the examples I have are internal or private logins, but I did see it on http://www.talkshoe.com/talkshoe/web/talkNow.jsp?pushNav=1&cmd=live when attempting to click on any of the Join In buttons.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information