W:Failed to fetch http://dl.google.com/linux/deb/dists/stable/Release  Unable to find expected entry 'non-free/binary-i386/Packages' in Release file (Wrong sources.list entry or malformed file)
, W:Failed to fetch http://pl.archive.ubuntu.com/ubuntu/precise-backports/dists/main/restricted/source/Sources  404  Not Found
, W:Failed to fetch http://pl.archive.ubuntu.com/ubuntu/precise-backports/dists/main/universe/source/Sources  404  Not Found
, W:Failed to fetch http://pl.archive.ubuntu.com/ubuntu/precise-backports/dists/main/multiverse/source/Sources  404  Not Found
, E:Some index files failed to download. They have been ignored, or old ones used instead.