KShutdown is an advanced shut down utility for KDE/Linux/Windows with various time and delay options (time from now, inactivity detection, ...).
KShutdown also has the following features : Turn Off or Restart Computer, Hibernate to disk or Suspend, Lock Screen using a screen saver, Command line support, Free and Open Source, KDE 4.
Shutdown, power off, reboot, hibernate, suspend, or log off PC at schedule time
