Macbook Pro AHT Failure (graphics chip)

Im a bit confused. I ran the Apple hardware test on my 15" macbook pro (10 months old) before taking it if for repair as the superdrive was failing (not from over use). I was surprised to see that it had failed with 4VDC/1/40000003: VideoController as the error.
I told the genius guy about the error and they said they would look at that as well. I received a phone call to say that the drive was fixed but no mention of the hardware failure. After asking about the failure I was told that they ran their more advanced test and it had passed but he couldnt explain why it failed on the test I ran. He then asked if I had experienced any graphics issues. All I could think on was when playing Warcraft the fan fires up and the game would freeze randomly and you cant touch the bottom of the case as it would almost burn you. The guy just said oh sounds its over heating but the chip passed our test and so wouldnt do anything about it.
Now I dont know it the chip is faulty or not. Under diagnostics the only test that is showing is the one I ran. I have also just run the test and it still says its failed.
Chipset Model: GeForce 8600M GT
Type: Display
Bus: PCIe
*PCIe Lane Width: x1*
VRAM (Total): 256 MB
Vendor: NVIDIA (0x10de)
Device ID: 0x0407
Revision ID: 0x00a1
ROM Revision: 3212
As you can see the PCIe width is now showing as x1 when it used to be x16. Anyone any ideas - do I go back to apple or just assume all is ok.

The "PCle Lane Width: x1" rather than "x16" was cited in another thread as a possible early indication of the impending failure of the 8600M GT chip.
I am puzzled that their test didn't show anything, but I am wondering if they might have run it when your Mac was cold. Sometimes things have to warm up before a problem will show up. I once came to the Apple Store 30 minutes early just so I could let my ibook run the 20 minutes it had to before its freezing problem would manifest itself. Maybe you need to play Warcraft for a while and get your Mac nice and hot and let them run their test then.
Did you show them the PCLe Lane Width? I don't see how they could say the chip was OK with this obvious anomaly.
Just to talk to someone else, you might try calling Apple on the phone with your persistent error code and the PCLe Lane Width anomaly. I have heard that you can get a pretty quick turnaround when you send it off, and people seem to be generally happier with the quality of the work that is done.
Good luck!

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Message was edited by: custom mini

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