Vertical yellow lines on MBP on white background after screen idle

After letting my MBP idle and the screen idle kicking in the display comes back with yellow lines but only on white background windows. See a screenshot here:
http://i110.photobucket.com/albums/n94/lelio_2006/photo.jpg
if the background is anything but white the lines do not appear. The lines are always vertical and they are one pixel wide (the white part is one pixel wide as well).
Taking a screen capture does not show these lines so I'm not sure if it is a problem with the video card but rather the display. After closing the lid and reopening the lines go away.
I have a GeForce 8600M GT that is mentioned in the tech support document. Is this related to that issue?

Still doesn't work after Apple repair.
Took my MBP into the Apple store, they plugged in a device to check it and said that it was broken. He took it in back and came out 5 minutes later and said that they need to ship it in and that I should back everyting up. I took it home to do so.
And then it WOULDNT BOOT. I ran fsck and it said that there were problems. Went back to the Apple store and a very helpful new person ran Disk Warrior and couldn't fix it. Said that I could give him my hard drive and he'll back it up and send it in for repairs. He definately went above the call of duty to help me out.
Got it back 5 days later and restored, that went amazingly smoothly. However I still have the same problem of yellow vertical lines after a system idle / shutdown. I'm not sure what they checked after replacing the logic board but it doesn't appear to have been fixed.
Does the logic board include the video card?

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Vertical yellow lines on MBP on white background after screen idle

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