Possible Duplicate:
How can I fix a 404 Error using a PPA?
When I run "software updater" I get the following message: Don't know what this could be, as my internet connection is perfectly fine. Any suggestions?
W:Failed to fetch http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu/dists/quantal/main/source/Sources 404 Not Found,
W:Failed to fetch http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu/dists/quantal/main/binary-i386/Packages 404 Not Found,
E:Some index files failed to download. They have been ignored, or old ones used instead.