I know that this question has been asked many times but everything I've seen has not helped me. I'm new to linux. I'm on 13.10 and I get that message every time I try to update my software sources. Let me know what other information you need. Below is the detail under the "Failed to download repository information Check your Internet connection." message.
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.