MBP Screen goes black and then restores. NVIDIA graphics card issue?

I've got a mid-2007 MBP, 2.4 GHz, 4 GB RAM, running 10.6.2.
Over the past couple of days I am having random losses of video screen. I will be on a webpage, doing nothing with it, and the screen will go momentarily black. It normally lasts for a few seconds, then restores. Nothing I do seems to affect the blacking out or the restoration.
I have the NVIDIA GeForce 8600M GT graphics card.
Any suggestions / input on whether I am experiencing the failure? FWIW, computer is still under Applecare.
Thanks

See this KB article:
http://support.apple.com/kb/TS2377
I have similar issues with my MBP. However there is also a widespread issue on the forums in which the trackpad and keyboard stops responding, and it may be difficult to tell if the problem is loss of video or loss of input ability when the display goes to sleep automatically. I'm currently in this boat. I'm not quite sure if I have a video problem of if this is the issue with the trackpad/keyboard connection.
The video card issue appears that apple will pay for out of warranty but they are not addressing the widespread problem with trackpad and keyboard loss of function and if you are out of warranty you are out of luck.
Message was edited by: Bryan Brindeiro

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MBP Screen goes black and then restores. NVIDIA graphics card issue?

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