Possible Duplicate:
How can I fix a 404 Error using a PPA?
Got this error when i tried to check for updates from my update manager,its showing me about some updates but gives me this error
W:Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/oneiric/main/source/Sources 404 Not Found , W:Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/oneiric/main/binary-i386/Packages 404 Not Found , E:Some index files failed to download. They have been ignored, or old ones used instead.
