A few weeks ago Firefox started not responding. I've uninstalled, reinstalled, tried all of the posted suggestions. I haven't changed anything on my pc. Something has changed or a patch has been installed and has broken something. If I try to move any bookmark into a folder, it immediately stops working. If I wait about 20 seconds, Firefox will eventually work. This doesn't work for me. Chrome and IE work just fine. This just started happening. Please fix.