update fails

I am running Netrunner Dryland Second Edition and since a few days Muon displays the following errors when updating:

Failed to download http://ppa.launchpad.net/cyberspace/ppa/ubuntu/dists/precise/main/source/Sources
404 Not Found

Failed to download http://ppa.launchpad.net/cyberspace/ppa/ubuntu/dists/precise/main/binary-amd64/Packages
404 Not Found

Failed to download http://ppa.launchpad.net/cyberspace/ppa/ubuntu/dists/precise/main/binary-i386/Packages
404 Not Found

Please dont let me down just because I am running an older version - it is an LTS, being based on 12.04, and I have been sticking with netrunner for a long time now and have newer versions installed on other machines, but cant upgrade this one.

Yes, but your referencing to a third party PPA that doesn’t exist any longer. Remove or replace that PPA with one that does and you should be back in business.

Hi Dan12,

those old repo entries can simply be removed under Muon Sources.
Simply enable kubuntu-ppa to get support and if you want to keep up with latest firefox versions, add this ppa:

Thanks a lot, Starbuck, works perfectly!