.........   .................................................................   .................................................................    W: Failed to fetch http://ppa.launchpad.net/apt-fast/stable/ubuntu/dists/trusty/main/binary-amd00/Packages  000  Not Found  W: Failed to fetch http://ppa.launchpad.net/apt-fast/stable/ubuntu/dists/trusty/main/binary-i000/Packages  000  Not Found  E: Some index files failed to download. They have been ignored, or old ones used instead.  I 