Make sure that you do not block cookies: * http://kb.mozillazine.org/Cookies * http://kb.mozillazine.org/Websites_report_cookies_are_disabled ---- * "Clear the Cache": Tools > Options > Advanced > Network > Offline Storage (Cache): "Clear Now" * "Remove the Cookies" from sites that cause problems: Tools > Options > Privacy > Cookies: "Show Cookies" ---- Start Firefox in [[Safe Mode]] to check if one of the add-ons is causing the problem (switch to the DEFAULT theme: Tools > Add-ons > Themes). * Don't make any changes on the Safe mode start window. See: * [[Troubleshooting extensions and themes]]

I tried but did not work.