Faulty video memory?

Dear All,
I bought a MacBook Pro 15" last friday. I used it for a day and installed the 802.11n upgrade that I bought from Apple since they had NOT upgraded this unit or provided it for free and I couldn't be bothered to go back to the store for $2.
Quickly after the upgrade I noticed not all was good. The video memory, actually, does not behave as it should. This is especially the case when I use it in closed lid mode, but it's more or less all the time. I would like to know if there are any other options than to go back to the store with it.
I have uploaded the pictures to http://niklas.saers.com/MBP
Please view them in 100% size
Image 8663 and 8865: I have moved the terminal window around on the screen a bit
Image 8693 and 8700: Here you can see what the average background looks like. Go in close and you can see lots of yellow spots
Looking at the screen is like wearing dirty glasses! Moving windows around is a pain. What should I do? Is there a video ram update available? I would prefer not having to return my mac as I need the computer for my work
Cheers
Niklas

Good news,
I went to Merlin in Esbjerg, Denmark, where I'd bought the computer and they listened to my problem, accepted the MBP back and gave me a new one. They only had the one on stand in the store, but since I need a computer to do my work, that was fine by me. It wasn't scratched and looked like new. Coming home I found that the battery was dead, so I called up the store and they suggested I install the battery from the MBP I handed in. So now, after two trips back and GREAT customer service, I have a new MBP that hopefully won't have this problem. I've noticed that it takes an hour and a half or something around that before the problem will appear on the previous one, so I'll keep you posted in a couple of days.
For people reading this later, this discussion intertwined with this one:
http://discussions.apple.com/message.jspa?messageID=4035806#4035806
PS, the space bar on the new computer is squeeking. Guess I'll call my computer Mouse or something
If you're looking to find out what it looked like, check out:
http://niklas.saers.com/MBP/MG8665.jpg

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Faulty video memory?

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