Hi, I've read a few threads on here as well as some of the links those threads point to. Unless I missed something, the reason for the yellow is: the yellowing of the display is a manufacturing defect involving the distance between a layer of material used to diffuse the LED backlight and the LCD panel. I haven't heard of any other credible reason, have you? My question is, if this is the reason for the yellow, then why is the Apple (LG/Phillips) the only one we hear about yellowing? Is this a weakness in all IPS screens or just a design flaw to this particular screen design? What other screens have the same or similar design? And why hasn't Apple or LG/Phillips come out and said "we have an issue, this is what the issue is, and this is how we are going to fix it"? Anyway, I am wanting to buy a 27" iMac, but don't want to deal with this type of issue. I feel sorry for all the folks that have gone thru 3 and 4 replacements and Apple and company don't even acknowledge this to be an issue, what the heck is happening to Apple?