[ubuntu] I can't get updates for some stuff

Hello all, when I run the update manager, i get the error

Failed to fetch http://security.ubuntu.com/ubuntu/di...86/Packages.gz 404 Not Found
Some index files failed to download, they have been ignored, or old ones used instead.

and when i try to do: sudo apt-get update i get

Ign http://security.ubuntu.com edgy-security Release.gpg
Ign http://security.ubuntu.com edgy-security/universe Translation-en_US
Hit http://us.archive.ubuntu.com hardy Release.gpg
Ign http://us.archive.ubuntu.com hardy/main Translation-en_US
Ign http://security.ubuntu.com edgy-security Release
Ign http://us.archive.ubuntu.com hardy/restricted Translation-en_US
Ign http://us.archive.ubuntu.com hardy/multiverse Translation-en_US
Ign http://us.archive.ubuntu.com hardy/universe Translation-en_US
Hit http://us.archive.ubuntu.com hardy-updates Release.gpg
Ign http://us.archive.ubuntu.com hardy-updates/main Translation-en_US
Ign http://us.archive.ubuntu.com hardy-updates/restricted Translation-en_US
Ign http://security.ubuntu.com edgy-security/universe Packages
Ign http://us.archive.ubuntu.com hardy-updates/multiverse Translation-en_US
Ign http://us.archive.ubuntu.com hardy-updates/universe Translation-en_US
Hit http://us.archive.ubuntu.com hardy-security Release.gpg
Ign http://us.archive.ubuntu.com hardy-security/main Translation-en_US
Ign http://us.archive.ubuntu.com hardy-security/restricted Translation-en_US
Ign http://us.archive.ubuntu.com hardy-security/multiverse Translation-en_US
Ign http://us.archive.ubuntu.com hardy-security/universe Translation-en_US
Err http://security.ubuntu.com edgy-security/universe Packages
404 Not Found
Hit http://us.archive.ubuntu.com hardy Release
Hit http://us.archive.ubuntu.com hardy-updates Release
Hit http://us.archive.ubuntu.com hardy-security Release
Hit http://us.archive.ubuntu.com hardy/main Packages
Hit http://us.archive.ubuntu.com hardy/restricted Packages
Hit http://us.archive.ubuntu.com hardy/multiverse Packages
Hit http://us.archive.ubuntu.com hardy/universe Packages
Hit http://us.archive.ubuntu.com hardy/main Sources
Hit http://us.archive.ubuntu.com hardy/restricted Sources
Hit http://us.archive.ubuntu.com hardy/multiverse Sources
Hit http://us.archive.ubuntu.com hardy/universe Sources
Hit http://us.archive.ubuntu.com hardy-updates/main Packages
Hit http://us.archive.ubuntu.com hardy-updates/restricted Packages
Hit http://us.archive.ubuntu.com hardy-updates/multiverse Packages
Hit http://us.archive.ubuntu.com hardy-updates/universe Packages
Hit http://us.archive.ubuntu.com hardy-updates/main Sources
Hit http://us.archive.ubuntu.com hardy-updates/restricted Sources
Hit http://us.archive.ubuntu.com hardy-updates/multiverse Sources
Hit http://us.archive.ubuntu.com hardy-updates/universe Sources
Hit http://us.archive.ubuntu.com hardy-security/main Packages
Hit http://us.archive.ubuntu.com hardy-security/restricted Packages
Hit http://us.archive.ubuntu.com hardy-security/multiverse Packages
Hit http://us.archive.ubuntu.com hardy-security/universe Packages
Hit http://us.archive.ubuntu.com hardy-security/main Sources
Hit http://us.archive.ubuntu.com hardy-security/restricted Sources
Hit http://us.archive.ubuntu.com hardy-security/multiverse Sources
Hit http://us.archive.ubuntu.com hardy-security/universe Sources
W: Failed to fetch http://security.ubuntu.com/ubuntu/di...86/Packages.gz 404 Not Found

E: Some index files failed to download, they have been ignored, or old ones used instead.

i can't seem to find a good fix for this. thanks!