Comment 2 for bug 1248650

There seems to have been a network error contacting your mirror of the ubuntu archive. This is a situation you'll need to sort out either by changing mirrors or resolving your network issue. From main.log we see:

, W:Imposible obtener http://ve.archive.ubuntu.com/ubuntu/dists/raring-backports/multiverse/binary-i386/Packages No se pudo conectar a ve.archive.ubuntu.com:http: [IP: 2801:82:80ff:8000::5 80]
, E:Algunos archivos de índice fallaron al descargar. Se han ignorado, o se han utilizado unos antiguos en su lugar'. Retrying (currentRetry: 0)