sudo apt-get update

gistfile1.txt

Ign cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1) precise InRelease
Ign cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1) precise/main TranslationIndex
Ign cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1) precise/restricted TranslationIndex
Ign cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1) precise/main Translation-en_GB
Ign cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1) precise/main Translation-en
Ign cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1) precise/restricted Translation-en_GB
Ign cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1) precise/restricted Translation-en
Err http://archive.canonical.com precise InRelease                             
  
Err http://archive.canonical.com precise Release.gpg                           
  Could not resolve 'rol'
Err http://be.archive.ubuntu.com precise InRelease             
  
Err http://be.archive.ubuntu.com precise-updates InRelease     
  
Err http://be.archive.ubuntu.com precise-backports InRelease   
  
Err http://be.archive.ubuntu.com precise Release.gpg           
  Could not resolve 'rol'
Err http://be.archive.ubuntu.com precise-updates Release.gpg
  Could not resolve 'rol'
Err http://be.archive.ubuntu.com precise-backports Release.gpg
  Could not resolve 'rol'
Err http://extras.ubuntu.com precise InRelease
  
Err http://extras.ubuntu.com precise Release.gpg
  Could not resolve 'rol'
Err http://security.ubuntu.com precise-security InRelease
  
Err http://security.ubuntu.com precise-security Release.gpg
  Could not resolve 'rol'
Reading package lists... Done
W: Failed to fetch http://be.archive.ubuntu.com/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://be.archive.ubuntu.com/ubuntu/dists/precise-updates/InRelease  

W: Failed to fetch http://be.archive.ubuntu.com/ubuntu/dists/precise-backports/InRelease  

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/InRelease  

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/InRelease  

W: Failed to fetch http://archive.canonical.com/ubuntu/dists/precise/Release.gpg  Could not resolve 'rol'

W: Failed to fetch http://be.archive.ubuntu.com/ubuntu/dists/precise/Release.gpg  Could not resolve 'rol'

W: Failed to fetch http://be.archive.ubuntu.com/ubuntu/dists/precise-updates/Release.gpg  Could not resolve 'rol'

W: Failed to fetch http://be.archive.ubuntu.com/ubuntu/dists/precise-backports/Release.gpg  Could not resolve 'rol'

W: Failed to fetch http://extras.ubuntu.com/ubuntu/dists/precise/Release.gpg  Could not resolve 'rol'

W: Failed to fetch http://security.ubuntu.com/ubuntu/dists/precise-security/Release.gpg  Could not resolve 'rol'

W: Some index files failed to download. They have been ignored, or old ones used instead.
W: Duplicate sources.list entry cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1)/ precise/main i386 Packages (/var/lib/apt/lists/Ubuntu-Server%2012.04%20LTS%20%5fPrecise%20Pangolin%5f%20-%20Release%20i386%20(20120424.1)_dists_precise_main_binary-i386_Packages)
W: Duplicate sources.list entry cdrom://Ubuntu-Server 12.04 LTS _Precise Pangolin_ - Release i386 (20120424.1)/ precise/restricted i386 Packages (/var/lib/apt/lists/Ubuntu-Server%2012.04%20LTS%20%5fPrecise%20Pangolin%5f%20-%20Release%20i386%20(20120424.1)_dists_precise_restricted_binary-i386_Packages)