hello sabeckis, you are on firefox 16, you can also check it yourself under firefox > help > about firefox.

Issues with logging on the websites can be caused by corrupted cookies. *https://support.mozilla.org/kb/fix-login-issues-on-websites-require-passwords You can always try these basic steps first: Clear the cache and the cookies from sites that cause problems. "Clear the Cache": *Tools > Options > Advanced > Network > Cached Web Content: "Clear Now" "Remove Cookies" from sites causing problems: *Tools > Options > Privacy > Cookies: "Show Cookies" *http://kb.mozillazine.org/Cookies *https://support.mozilla.org/kb/Deleting+cookies