[lubuntu] Failed to update; Lubuntu 12.10

view story

http://ubuntuforums.org – When i go to the update manager, this is what occurs: W:Failed to fetch http://ppa.launchpad.net/ubuntu-x-sw...source/Sources 404 Not Found , W:Failed to fetch http://ppa.launchpad.net/ubuntu-x-sw...amd64/Packages 404 Not Found , W:Failed to fetch http://ppa.launchpad.net/ubuntu-x-sw...-i386/Packages 404 Not Found , E:Some index files failed to download. They have been ignored, or old ones used instead. I know I can remove these repositories, but if i do then I have no place to update from right? Thanks in advance:) (Hardware)