Check out the AVS forums for a serious jittering issue on this monitor. It is present on the vast majority of rev. 2 versions (which they all appear to be at this point) and is the sole reason I am not rushing out to get one. If they could fix it, or if you can get one without the problem, it is an excellent deal.
Here is a bit of a summary from one of the posts:
"I too had this judder/tearing problem, as everyone else with a Revision2 set does. It's particularly noticeable on video with lots of panning. But JudderTest makes it even more obvious.
I managed to use PowerStrip to adjust the refresh rate to minimize the problem, and at 53.105Hz JudderTest shows almost no judder or tearing. And indeed, when I play a WMV-HD movie, the resulting image is gorgeous.
Here's the thing, though. This set clearly does NOT do 1080p, which requires 60 Hz. There is something in the signal path inside the TV that is causing "Judder" (which amounts to "skipping" frames and tearing) when fed a 1080p signal above 53Hz. This is not good.
And worse, I really don't think that people should have to go through this nonsense with what amounts to a computer monitor. I just tested my other 2 LCD computer displays, and NEITHER of them show this judder problem at 60Hz."
Check out the entire thread:
http://www.avsforum.com/avs-vb/showthread.php?t=573173