vaio:~# apt-get update
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-1 20070819-11:33] etch Release.gpg
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-2 20070819-11:33] etch Release.gpg
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-3 20070819-11:33] etch Release.gpg
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-1 20070819-11:33] etch Release
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-2 20070819-11:33] etch Release
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-3 20070819-11:33] etch Release
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-1 20070819-11:33] etch/contrib Packages/DiffIndex
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-1 20070819-11:33] etch/main Packages/DiffIndex
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-2 20070819-11:33] etch/contrib Packages/DiffIndex
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-2 20070819-11:33] etch/main Packages/DiffIndex
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-3 20070819-11:33] etch/contrib Packages/DiffIndex
Ign cdrom://[Debian GNU/Linux 4.0 r1 _Etch_ - Official i386 DVD Binary-3 20070819-11:33] etch/main Packages/DiffIndex
Ign file: etch Release.gpg
Ign file: etch Release.gpg
Ign file: etch Release.gpg
Ign file: etch Release
Get:1 file: etch Release [642B]
Ign file: etch/main Packages
Get:2 file: etch Release [642B]
Ign file: etch/main Packages
Err file: etch/main Packages
  File not found
Ign file: etch/main Packages
Get:3 http://security.debian.org etch/updates Release.gpg [189B]
Hit http://security.debian.org etch/updates Release
Ign http://security.debian.org etch/updates/main Packages/DiffIndex
Ign http://security.debian.org etch/updates/contrib Packages/DiffIndex
Ign http://security.debian.org etch/updates/main Sources/DiffIndex
Ign http://security.debian.org etch/updates/contrib Sources/DiffIndex
Hit http://security.debian.org etch/updates/main Packages
Hit http://security.debian.org etch/updates/contrib Packages
Hit http://security.debian.org etch/updates/main Sources
Hit http://security.debian.org etch/updates/contrib Sources
Fetched 1B in 1s (1B/s)
Failed to fetch file:///mnt/debian-cd1/dists/etch/main/binary-i386/Packages.gz  File not found
Reading package lists... Done
W: Couldn't stat source package list file: etch/main Packages (/var/lib/apt/lists/_mnt_debian-cd1_dists_etch_main_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list file: etch/main Packages (/var/lib/apt/lists/_mnt_debian-cd1_dists_etch_main_binary-i386_Packages) - stat (2 No such file or directory)
W: You may want to run apt-get update to correct these problems
E: Some index files failed to download, they have been ignored, or old ones used instead.