I had early 24 imac model which had rather horrible image burn in or persistence whatever you wanna call it. It was replaced by NEC 2490 3-4months ago and it starts doing the same thing on the right side of the screen. Funny thing is neither of them had that problem for the first few months. So my question is, do I just have live with it as long Im using IPS or did I just have bad luck and need to have the screen replaced. What I dont understand is why it gets worse over time..