I go through a corporate server and sometimes a "This connection is untrusted" window pops up. Unfortunately, the window is not a regular type which can be resized. It cannot be scrolled either. In Internet explorer, the buttons to add exceptions are on the side of this message not at the end of the message as in Firefox. That means that since the window is small I cannot see nor, without a scroll bar, access the buttons to add an exception, and so the site is effectively blocked for me with Firefox. To work around this problem I have to copy the URL and use Internet Explorer.