Dancing pixels in large black areas of my new 30 inch ACD

I posted this on a thread in the 2004 forum, and then thought to post it here since I just bought my 30 inch LCD new from the Apple Store yesterday.
I have a dancing pixel / pixel static problem, which happens whenever there are large black spaces on the screen, such as the black computer name screen saver, or the black screen where you enter your password to get back into your account from secure sleep. The dancing pixel static also appears in Terminal windows that are set to have a solid black blackground.
To deal with this problem, I just decided to set my Terminal and gvim backgrounds to dark grey. This seems to be a tolerable solution. I also took all the firewire and USB cables out from the back of the display, which was proposed by Apple support as a fix to this sort problem last year, as someone reported in the forum.
I still have to deal with the dancing pixel static in the short interval between the time I activate any screensaver with a hot corner, and the appearance of the same. And the static is all over the place when I try to get out of the screen saver and have to give me password.
I think I can live with that as long as the problem doesn't get worse... Anyone have a similar experience?
Macbook Pro Mac OS X (10.4.6)

OK I went to the Apple Store today and they let me trade it in for a new 30 inch LCD. This one is definitely better. There is some pixel static still in large black areas. But much, much less. I hardly notice it, though I can if I look for it. But overall I'm very happy with it now. I love the screen. 30 inches really makes a huge difference.
I wonder though what's the deal with large black areas that causes this to happen on the LCDs.

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