New Imac screen flicker when dimmed down

Hi guys, I got my new Imac about a week ago, aside from the whistling and dead pixels in the isight, are any of you guys getting screens that are sort of flickering when you start to dim them down. The light dims and filckers very quickly. It's kind of looks like the old CRT's at a slow refresh rate and is becoming really annoying. I was wondering if this is normal for all the Imacs. I'll be getting a replacement because of the dead pixels in my Isight, but this will also be something to look for in the new one. So it'll be good to know if it is normal.

Well, this is definitely a hardware defect and it appears to be wide spread. I took my iMac back to the Apple store today and the Tech saw the problem too and exchanged it for a new one (since it was within 14 days). Well, got that one home, and it had the same flicker issue. Two hours later back at the Apple Store, they saw the issue with the replacement machine too, but not with any of their floor models. So, they took that one back too and are doing a writeup to send it back to Apple so they can diagnose the problem.
The replacement iMac they brought out for me this time we setup in the store and confirmed did not have the display flicker issue when the backlight was all the way down.
So my suggestion is if you have this issue, take it into the Apple Store and have them replace it or repair it.

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