For the past week or so, every time I try to update I get the following error message (despite adjusting for nearest server locations...):
W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/saucy/universe/source/Sources 404 Not Found [IP: 91.189.91.13 80]
W:Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/saucy/multiverse/source/Sources 404 Not Found [IP: 91.189.91.13 80]
E:Some index files failed to download. They have been ignored, or old ones used instead.
How can I fix this? Please be a bit pedantic in any instructions - I'm still fairly new to [using] terminal.