Could you clarify what you mean by this? Not sure if I understand.
Burn in requires a static image for a long period of time (months/years). It doesn't just magically show up after 5 minutes of use.
Burn-in is more likely to be found on CRTs and can take a long time to occur. Image persistence can happen in seconds or minutes and is what is seen on LCDs. It's usually temporary or reversible. (And plasma owners can experience both, yay! :)
This doesn't deny my point of Apple support is awful outside US, though. I also have issue with horizontal line on 2009 iMac screen that they refuse to acknowledge the problem until very recently (October 2011). I'm happy that it's finally fixed, but it shouldn't took two years.
[1]: http://en.wikipedia.org/wiki/Image_persistence
[2]: http://compreviews.about.com/od/monitors/a/LCDBurnIn.htm
I got them to replace my 27" iMac screen, on site, without taking it to an apple store, just by sending them pictures of it. Had some intermittent discoloration. And it got replaced the very next day.
Their phone system is also great now. No waiting on hold or typing numbers into your phone 3 times each, then repeating them to each agent, like with comcast and others.
The US has great customer service and of companies operating in the US, Apple is the cream of the crop. So it's effectively the creme de la creme in the US. Customer service in southeast Asian countries is largely crap across the board (I lived in China for 1.5 years and I'm speaking from experience).
One of the cultural phenomena that backfires customer service-wise is the collectivistic culture versus individualistic culture. Business people see customers as a collective and not a group of individuals. In this environment, no matter how good Apple's policies are, the judgement of whether or not your case/issue will be judged on a case by case basis and deemed worthy of meriting a replacement is going to break down because the people you ultimately deal with don't see or treat you as an individual or your case as unique.
There are benefits of collectivistic cultures, but customer service isn't one of them.