i was playing around with local proxy server authentication and I was wondering why I got an internal server error when i tried to call https://:444/cgi-bin/chpasswd.cgi . I had a look in the error log of the webserver and found out that the language file (line 46) de.utf8.pl could not be located. The language file in /var/ipfire/langs/ is called de.pl so I copied tit to de.utf8.pl and chpasswd.cgi is working again. I had this problem on two systems on Core 141. It seems like a bug.