My C9 with firmware 03.60.04 is causing a lot of artifacts if I enable the TruMotion De-Judder option.
It seems the current implementation does have some pretty severe issues with some content.
It doesn't matter which level of De-Judder I use, even a value of "1" causes some really nasty artifacts.
Watch this video which shows the right border of the "":
You're supposed to see a straight non-moving line but instead the border shows a lot of artifacts.
Everything looks perfect when I disable TruMotion.
If you own a C9/E9 check it yourself, my recording doesn't even capture how bad it actually looks when you watch the video. You will be able to see these kind of artifacts in "real" 24p content all the time!
I really hope LG is gonna fix this since all you can do for now is disable the De-Judder option which of course means you have to live with the stutter caused by 24p content.