Possible Duplicate:
How can I fix a 404 Error using a PPA?
When trying to update Ubuntu, I receive the following failed error message.
W:Failed to fetch http:// ppa.launchpad.net/sevenmachines/flash/ubuntu/dists/quantal/main/source/Sources 404 Not Found
, W:Failed to fetch http:// ppa.launchpad.net/sevenmachines/flash/ubuntu/dists/quantal/main/binary-amd64/Packages 404 Not Found
, W:Failed to fetch http:// ppa.launchpad.net/sevenmachines/flash/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.
Anyone could help me to solve that?