Thanks for answer, I did it but there is an extra line
( the first 900
http://ftp.fr.debian.org/debian/ squeeze/main Translation-fr )
how to remove it:
here is my filecat /etc/apt/preferences
Package: *
Pin: origin ""
Pin-Priority: 900
Package: *
Pin: origin "localhost"
Pin-Priority: 600
Package: *
Pin: origin "
ftp.fr.debian.org"
Pin-Priority: 500
Here is the output
100 /var/lib/dpkg/status
release a=now
900
http://ftp.fr.debian.org/debian/ squeeze/main Translation-fr
500
http://ftp.fr.debian.org/debian/ squeeze/non-free i386 Packages
release v=6.0.1,o=Debian,a=stable,n=squeeze,l=Debian,c=non-free
origin
ftp.fr.debian.org
500
http://ftp.fr.debian.org/debian/ squeeze/contrib i386 Packages
release v=6.0.1,o=Debian,a=stable,n=squeeze,l=Debian,c=contrib
origin
ftp.fr.debian.org
500
http://ftp.fr.debian.org/debian/ squeeze/main i386 Packages
release v=6.0.1,o=Debian,a=stable,n=squeeze,l=Debian,c=main
origin
ftp.fr.debian.org
600
ftp://localhost/extra6Bis/ Packages
origin localhost
900 file:/opt/extra6/ Packages
thanks a lot