different packages lists at http://security.debian.org and ftp://ftp.debian.org/

http://security.debian.org/dists/stable/updates/main/binary-i386/Packages ftp://ftp.debian.org/debian/dists/woody-proposed-updates/main/binary-i386/Packages Good day i found some differencies at this files: as sample i can not found last security update libc6_2.2.5-11.5 (and other glibc packages) at ftp, and can not found non-secure update debianutils_1.16.2woody1 (which exist at ftp) at http Is the updates, existing at ftp but is absent at http://security.debian.org/... really good updates?