/etc/apt/sources.list:
# Line commented out by installer because it failed to verify: deb http://security.debian.org/ stable/updates main # Line commented out by installer because it failed to verify: deb-src http://security.debian.org/ stable/updates main # Line commented out by installer because it failed to verify: deb-src http://ftp.fr.debian.org/debian jessie main contrib non-free deb http://ftp.fr.debian.org/debian/ jessie contrib non-free main #deb http://ftp.us.debian.org/debian/ jessie main non-free contrib I have no /etc/apt/preferences file. I remove the security lines and it is ok now -- Jean-Luc
