I have a 2.4GHz from week 44 and it went through two repairs but Apple Technicians don't seem to be able to fix my 1/3 yellowish-tone screen bottom. So I am wondering how the newest machines are doing in that regard. For those of you with a 2.6GHz 15" MBP, could you please comment the screen issue and any other problem you may have. I am also interested in reading accounts of the fans behavior, whether you find they kick-in too often and go all the way up to above 5,000 rpm, mainly. Thank you for your help.