I recently purchased a new 3.0 dual core 27" iMac from best buy, disregarding all the "known" issues. (hard drive noise, and tinted screens) I took it out of the box and hooked it up...PERFECT condition. No issues at all.....at least for 3 weeks anyways. Last week I logged on to this website and automatically saw the dreadful yellow tint at the bottom of my screen. It was all the way across and about 2 inches high. I instantly called apple. Apple informed me it was NOT a known problem and that I could take it to a "local" Apple approved repair station. (I live in Arkansas and we have not one Apple store in our wonderful state) They said I would be without my computer for up to 3 weeks! This was not an option for me so I declined and got off the phone a little upset! Then Apple called me yesterday...and TOTALLY REDEEMED THEIR SELVES! A Mac engineer by the name of Tye called me and told me that the yellow tinge was a definite issue that they knew about and were researching it thoroughly. He then informed me that they were going to send me a brand new replacement iMac free of charge...AND they are going to UPGRADE me to the i5 at no additional cost to me!! ARE YOU KIDDING ME!! I was wanting the i5 but couldn't see putting forth the extra cash at the time of purchase. He took all my info and set everything up for me. I directed him to the gray bar test on this site which he said was a big help. Due to shipping delays on the i5's i will be without a computer for up to 2 weeks, but i think I can make due considering the conditions! BEST customer support help I have EVER received!