KDE Plasma 5.21.1 is here just a week after the launch of KDE Plasma 5.21, which introduced a brand-new Kickoff application launchers, a new System Monitor app, a new dark theme, better Wayland support, and numerous other improvements. This first point release is a maintenance update that fixes bugs to improve the Plasma Wayland session on Nvidia Optimus laptops so it will no longer crash on login, improve the new System Monitor app to no longer crash on launch when not using the optional systemd startup feature, and make the Task Manager let you run third-party executable programs pinned to it.