OK...not sure what's going on here. I've had the new 23" for about 3 weeks. I am using it with my 12" Rev C powerbook. When I change apps or close windows that are bright and have been open for a while (indesign, safari, a few others) there appears to be a ghost of that window left on the screen. my desktop is set to medium grey. the effect is almost like a mild "burn in." After a while it goes away. But it doesn't seem like I can force it to go away just by dragging a window over that area and forcing a screen redraw. Anyone have this problem or have an idea of what's causing it? How do I know if it's the video card in my pbook or the monitor itself? Big thanks in advance.