E: Could not open lock file /var/lib/apt/lists/lock - open (13 Permission denied)
E: Unable to lock the list directory
benoit@oscar:~$ sudo apt-get update
Ign cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy Release.gpg
Ign cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy ReleaseIgn cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy/main Packages
Ign cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy/restricted Packages
Err cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy/main Packages
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Err cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy/restricted Packages
  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Get:1 http://fr.archive.ubuntu.com breezy Release.gpg [189B]
Get:2 http://fr.archive.ubuntu.com breezy-updates Release.gpg [189B]
Get:3 http://security.ubuntu.com breezy-security Release.gpg [189B]
Hit http://fr.archive.ubuntu.com breezy Release
Hit http://security.ubuntu.com breezy-security Release
Hit http://fr.archive.ubuntu.com breezy-updates Release
Hit http://security.ubuntu.com breezy-security/main Packages
Hit http://fr.archive.ubuntu.com breezy/main Packages
Hit http://fr.archive.ubuntu.com breezy/restricted Packages
Hit http://fr.archive.ubuntu.com breezy/main Sources
Hit http://fr.archive.ubuntu.com breezy/restricted Sources
Hit http://fr.archive.ubuntu.com breezy/universe Packages
Hit http://fr.archive.ubuntu.com breezy/universe Sources
Hit http://security.ubuntu.com breezy-security/restricted Packages
Hit http://security.ubuntu.com breezy-security/main Sources
Hit http://fr.archive.ubuntu.com breezy-updates/main Packages
Hit http://fr.archive.ubuntu.com breezy-updates/restricted Packages
Hit http://fr.archive.ubuntu.com breezy-updates/main Sources
Hit http://fr.archive.ubuntu.com breezy-updates/restricted Sources
Hit http://security.ubuntu.com breezy-security/restricted Sources
Hit http://security.ubuntu.com breezy-security/universe Packages
Hit http://security.ubuntu.com breezy-security/universe Sources
Fetched 3B in 0s (4B/s)
Failed to fetch cdrom:[Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012)]/dists/breezy/main/binary-i386/Packages.gz  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Failed to fetch cdrom:[Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012)]/dists/breezy/restricted/binary-i386/Packages.gz  Please use apt-cdrom to make this CD-ROM recognized by APT. apt-get update cannot be used to add new CD-ROMs
Reading package lists... Done
W: Couldn't stat source package list cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy/main Packages (/var/lib/apt/lists/Ubuntu%205.10%20%5fBreezy%20Badger%5f%20-%20Release%20i386%20(20051012)_dists_breezy_main_binary-i386_Packages) - stat (2 No such file or directory)
W: Couldn't stat source package list cdrom://Ubuntu 5.10 _Breezy Badger_ - Release i386 (20051012) breezy/restricted Packages (/var/lib/apt/lists/Ubuntu%205.10%20%5fBreezy%20Badger%5f%20-%20Release%20i386%20(20051012)_dists_breezy_restricted_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.