after modifuing the etc/apt/sources.list this is the problem when updating Ign http://volatile.debian.org squeeze/volatile/main Packages Ign http://volatile.debian.org squeeze/volatile/main Sources Ign http://volatile.debian.org squeeze/volatile/main Packages Ign http://volatile.debian.org squeeze/volatile/main Sources Err http://volatile.debian.org squeeze/volatile/main Packages 404 Not Found Err