VLC does NOT reset Windows Power Settings
When you play a video VLC shuts off the screen saver and Power settings. When you quit VLC the Power Settings are NOT restored and randomly the screen saver times will be changed.
This is a incorrect action for any media player.
http://forum.videolan.org/viewtopic.php?f=14&t=16603
This issue has been going on ever since I can remember using VLC.