I searched for this and I read through the first 11 pages and didn't find exactly what I was looking for.
This is the computer I have: Toshiba Satellite A205-S4639
http://www.compusa.com/products/product_info.asp?pfp=BROWSE&No=0&N=200334+400115&Ne=400000&product_code=344550
The screen saver is set to come on after 20 minutes. At that time it just goes to a black screen. One time the screen saver did actually come on for a few seconds but then went back to the black screen. I read in one of the threads that the NVIDIA may have something to do with it.

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