Eclipse package files will not download

[James McMullen]

Receive error message "Failed to download package files"
                                               "Check your Internet connection."
Details
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openjdk-6/openjdk-6-jre-lib_6b27-1.12.6-1ubuntu0.12.04.2_all.deb 404 Not Found
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openjdk-6/openjdk-6-jre-headless_6b27-1.12.6-1ubuntu0.12.04.2_amd64.deb 404 Not Found
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openjdk-6/openjdk-6-jre_6b27-1.12.6-1ubuntu0.12.04.2_amd64.deb 404 Not Found
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openjdk-6/openjdk-6-jdk_6b27-1.12.6-1ubuntu0.12.04.2_amd64.deb 404 Not Found
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openjdk-6/icedtea-6-jre-cacao_6b27-1.12.6-1ubuntu0.12.04.2_amd64.deb 404 Not Found
Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openjdk-6/icedtea-6-jre-jamvm_6b27-1.12.6-1ubuntu0.12.04.2_amd64.deb 404 Not Found

But, my internet connection is working. It downloaded much of the package, but it keeps getting stuck on these files not
being available.