LM 18 XFCE: Screensaver/ Power Manager Options

The current settings for the screensaver and the Power Manager for the display on the Optiplex.
Right after installing LM 18 the screen (actually my old Apple Cinema Display hooked thru the ADC adapter) failed to shutdown all the way.
But after a reboot the screen does shutdown ok, after the screensaver kicks in and the amount of specified time passes.