I, too, found the same problem. I was running pdaxrom and went back to Cacko yesterday. Sure enough, I experienced screen ghosting, but the "echo" fix didn't do it for me.
So, I did a NAND restore and wouldn't you know it, there was no screen ghosting at all, but then there was Japanese to contend with.
Then, I reflashed Cacko and the screen ghosting came back. Now I'm back to pdaxrom with no ghosting.
What gives?