I've got my iMac with its brand new screen sitting on my desk. No more forty-two lines, no more single dead pixel!
Repair is guaranteed for the next tree months. Touch wood nothing EVER happens to it!
What they've done? Just screen replacement. It took my apple store two weeks to have it fixed.
Any questions? I'd be glad to answer!
Still have your screen like trash? call apple. call apple. call apple!!! just don't give up, each operator is very different from the other. You might not get what you want on first call, but be sure apple IS fixing this problem!