having a problem trying to down my unity in 12.10

just downloaded new version of ubuntu 12.10, however when i try to download my unity it fails to fetch.
when i use (this instalition is a clean install)sudo apt-get install myunity this is what i get
W: Failed to fetch http://ppa.launchpad.net/myunity/ppa/ubuntu/dists/quantal/main/source/Sources 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/myunity/ppa/ubuntu/dists/quantal/main/binary-i386/Packages 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/rye/ubuntuone-extras/ubuntu/dists/quantal/main/source/Sources 404 Not Found

W: Failed to fetch http://ppa.launchpad.net/rye/ubuntuone-extras/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.
can someone help me with this prob