It's not my power settings in control panel.  The monitor was set to turn off after 20 min of no activity.  I changed it to 1 min and started a tank sortie in aces high.  I sat in the tank without touching a key, mouse, or controller for over 5 min.  The monitor did not turn off.  I closed the game, went to the desktop and touched nothing.  The monitor turned off after 1 min.  The monitor did not actually turn off completely.  It went into a standby mode with a black screen and the LED in the on/off button flashing.  It came on again when I moved the mouse.  It was not necessary to use the monitor on/off button.   When the screen goes black on AH the monitor actually turns off.  I need to use the on/off button to turn it on again.  
I do not have my screen saver set to hibernate my monitor.
I have been using this monitor and computer for AH for over a year.  I did not experience this issue until I installed the new version.  I have made no changes to my computer settings or instslled sny new software since the new version camer out.  I don't believe it's my hardware because since the new version I have spent more time in Over Flanders Fields and IL2 than in AH and have not had a single occurrence of my monitor going black.  It seems to be unique to AH.  Skuzzy, are you out their?  I  am completely stumped.