I have web page on IIS6 which need windows authentication. I enabled certificate mapping on certain user so when I install the proper certificate on firefox installed on Windows-based PC (I login with local user) and set network.automatic-ntlm-auth.trusted-uris variable, I can access this site without typing username and password. I tried to configure in same way firefox on my linux station, but it doesn't work - the web site access attempt finishes with authentication request windows