Really? I've used mine for a little over a year as a PC display and the burn-in has come to a point where I'm thinking of just throwing it out because nobody in their right mind would pay money to get it off my hands.

Do you happen to have your brightness set to really low or something? I left mine around the default thinking it'd be safe but that totally didn't work out.

Differences in climates can play a part in this as well it would be difficult to call but possible that cooler locations fair better than the tropics. I have no data to support this but would be very interested if there is data on the lifespan of electronics like this in different climates.