I don't know about the others, but I have given up. It takes too much time to quarrel with the people at OfficeLine, Oslo (my local dealer), and the crack hasn't become worse. I'm writing my master thesis this autumn, so I can't be without the computer for all the weeks it will take for them to look at it. They also tried to charge me over $100 for looking at the ibook, so it's a pain in the ass, to say the least.