I have 15.05 installed on my desktop, i recently installed it on my laptop and it was working fine, i opened it today and attempted to do an apt-get update and i'm having multiple repositories in the launchpad.net vivid/main return 404 errors, i've been Err http://ppa.launchpad.net vivid/main amd64 Packages
404 Not Found online for awhile now and i haven't found anything that works so far, can anyone out there point me in the right direction. here is a full list of the outputted repo's that aren't working.
Err http://ppa.launchpad.net vivid/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net vivid/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net vivid/main Translation-en_US
Ign http://ppa.launchpad.net vivid/main Translation-en
Err http://ppa.launchpad.net vivid/main amd64 Packages
404 Not Found
Err http://ppa.launchpad.net vivid/main i386 Packages
404 Not Found
Ign http://ppa.launchpad.net vivid/main Translation-en_US
Ign http://ppa.launchpad.net vivid/main Translation-en
Fetched 1,960 B in 15s (124 B/s)
W: Failed to fetch http://ppa.launchpad.net/freyja-dev/unity-tweak-tool-daily/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/freyja-dev/unity-tweak-tool-daily/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/vivid/main/binary-amd64/Packages 404 Not Found
W: Failed to fetch http://ppa.launchpad.net/pidgin-developers/ppa/ubuntu/dists/vivid/main/binary-i386/Packages 404 Not Found
E: Some index files failed to download. They have been ignored, or old ones used instead.