Comment 78 for bug 75681

it doesn't upgrade the system. It shows me following:

Failed to fetch http://uz.archive.ubuntu.com/ubuntu/dists/edgy-updates/Release.gpg Соединение разорвано
Failed to fetch http://uz.archive.ubuntu.com/ubuntu/dists/edgy/Release.gpg Соединение разорвано
Failed to fetch http://uz.archive.ubuntu.com/ubuntu/dists/edgy-backports/Release.gpg Соединение разорвано
Failed to fetch http://kubuntu.org/packages/kde4-3.80.3/dists/edgy/Release.gpg Ошибка чтения, удалённый сервер прервал соединение
Failed to fetch http://thomas.enix.org/pub/debian/packages/dists/edgy/main/binary-i386/Packages.gz 302 Found