In the 4.1 Desktop installer, at the stage "10/15 Дополнительные пакеты", I pressed the button "Далее" ("Proceed") by mistake (because of the damned touchpad). So, I would like to go back and add more package groups. But the button "Назад" ("Back") is disabled. Bad. Workaround: use synaptic, apt-get or whatever in the ready system to install more packages.
Поддержка дистрибутива завершена. Используйте новые версии.