New 21.5" imac vertical line on screen

I just returned from my local Apple store after checking out the new imac computers. I noticed on many of the 21.5" imacs that there was a vertical line down the left side of the screen that looked like burn-in. It's about one and a quarter inches from the left side of the screen. It is clearly visible using any background color except white. Apple store employees and two Apple Geniuses had no idea what was causing it and hadn't noticed it themselves until I pointed it out to them. They said they would investigate. Has anyone else noticed this? It was on about half of the computers that I looked at in the store.

The link posted by Carolyn above is an old issue with G5 iMacs, which has nothing to do with this new issue. This new issue is apparently a fairly widespread manufacturing defect in the new 21.5" Silverback iMacs. I just bought one for my parents this week, and it unfortunately suffers from this same defect. A single pixel vertical line running from top to bottom, about 1.5" from the left side of the screen. On a light background the line is bluish, on a dark background, the line is red. Serious issue, I hope Apple gets on this one quickly.

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