Until they sort out this problem. Its silly for them to send out yellow monitors period. If 40-60 percent are being returned for replacement, why would apple not want to delay sending out defective monitors. I see lots of complaints for the three week delay. If I were the company I would put out a statement, until the problems with the i7 and i5 imacs is fixed, we will delay shipment. I told them Im willing to wait until rev. b or c. I have the 27 inch in my house now and im using it till the replacement comes in. But I'd prefer to not have to deal with the yellow issue again. if you dont want yellow get a slower machine in 27 or go smaller, they arent having issues. If you need it for a project or are desperate thats a different issue, then go for it on amazon. I will say, i had a mac pro that was panic attacking on me constantly and asked to replace it with the imac. I absolutely love the 27 inch monitor, and the way it performs. Apple boys were trying to get me just to replace the mac pro saying it was a better machine. Im not a big gamer so this will suit me better, but still cant live with yellow.
40-60%? LOL! I'm willing to bet that less than 1 out of every 100 27" iMacs being sent out are being sent back for screen-related issues. The people here on Mac Rumors are a VERY vocal lot. Again. I won't argue that the 27" screen is perfect - it isn't - but I guarantee you (as much as anyone with a knowledge of electronics and people's tolerances) that nowhere near 40-60% are being sent back.
Here's an example: My good friend Steven has an iPhone 3GS. It has 3 stuck blue pixels BANG in the center of the screen. He doesn't care ONE BIT. Would you or I care? HELL YES. But we are not the "average Mac owner."