My firefox frequently, several times a week, locks it configuration information and that of the add ins. One of the symptoms of this is a number of sites will not let me enter passwords. I also use "Update Scanner" add-in and when the sites that I am monitoring do not show up in the sidebar, I know that it has happened again. The only way that I have found to fix it, other than a clean install after deleting all vestiges of of it on the computer and registry etc. Is to Enter Troubleshoot Mode and then use the options to Refresh, and Refresh again. I then have to configure everything else from the settings page and the configure toolbar. I have started up in troubleshoot mode, removed all addins, done clean installs, Yet I still have the problem. I am sure that the problem something with my computer setup. As I have other machines that do not have this problem. I would like to get some guidance of ways to figure this out.