Hi, first of all these forums have been great during my decision to switch to apple, and thought that id share my story as some comfort to those struggling with yellow screens. I read about the yellow bottom 1/3 issues but decided to take the risk and get a macbook pro anyway. Sadly I ended up with an LG screen that had pretty bad yellowing. Replaced it only to get another one with a Samsung screen and more yellowing (though much more subtle). Not wanting to risk another replacement with defective units still out there, and reading the tales of members here who had sent their laptops for repair only to get another dodgy screen I decided to email Steve Jobs about my problem. I got a prompt reply from Executive Relations Europe and a follow up telephone call. They were very apologetic, said that my case had been discussed with tech support and that although they couldn't say certainly that this was a known issue without examining my unit, that there had been problems with the screens. Apparently they have now switched manufacturer or something (probably not but maybe new batches?) and that there are perfect screens out there. Therefore they offered me a new unit, which would be custom built and guaranteed to check it to make sure it had one of the perfect screens on, and then delivered to my door. I even got a free hard drive upgrade thrown in, and a courier to pick up my old mbp! Overall therefore, if all goes as planned I will have been very impressed by Apple's response.