Screen goes dark during playback

When playing a DVD through Front Row the screen is going dark as it does when it is not touched for a while to save battery. However it does not do it all the time and does it at random intervals. Any ideas??
I have played around with energy saving settings but nothing seems to be quite hitting the nail on the head.
MacBook Mac OS X (10.4.6)

Try it in DVD Player (found in the Applications Folder). It may or may not do it here.
The problem may very well be the settings for power consumption.
1. Open system prefs (Apple Menu > System Prefs)
2. Click Energy Saver
3. Make sure that under "settings for:" you have battery selected (you may want to do this for both battery & Power Adapter)
4. Where it says "Put the display to sleep when the computer is inactive for:", choose 3 hours
5. Click options
6. Uncheck the box labeled "Reduce the brightness of the built-in display when using this power source"
This should do the trick. Again, you may want to do the same for the power adapter settings, if this is also happens using the power plug.
Hope this is helpful,
Cory

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Screen goes dark during playback

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