Downloading http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease... Error downloading http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease: HTTP code 404 while fetching http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease retrying... Retrying 0 http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease... Giving up on http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/InRelease... Downloading http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/Release... Success downloading http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/Release Downloading http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/Release.gpg... Success downloading http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/dists/maverick/Release.gpg gpgv: RSA key ID 3B1F56C0 gpgv: Good signature from "Launchpad sim" Mirror [mirror18]: http://ppa.launchpad.net/gladky-anton/gnuplot/ubuntu/ maverick successfully added. You can run 'aptly mirror update mirror18' to download repository contents.