W: The repository 'http://security.ubuntu.com/ubuntu lucid-security Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
W: The repository 'http://cz.archive.ubuntu.com/ubuntu lucid Release' does not have a Release file.
N: Data from such a repository can't be authenticated and is therefore potentially dangerous to use.
N: See apt-secure(8) manpage for repository creation and user configuration details.
E: Failed to fetch http://security.ubuntu.com/ubuntu/dists/lucid-security/main/binary-amd64/Packages  404  Not Found [IP: 91.189.88.161 80]
E: Failed to fetch http://cz.archive.ubuntu.com/ubuntu/dists/lucid/main/binary-amd64/Packages  404  Not Found [IP: 217.31.202.63 80]
E: Some index files failed to download. They have been ignored, or old ones used instead.