Well, just as the title says, I have a 23" Apple Cinema Display from 2006. It's the aluminium model, and is always in a very clean, almost dust free enviroment (Used next to an air purifier), and is cleaned very well about once a week. The Power Supply is also kept clean. It already has 4 dead pixels and is starting to show some burn in, and i'm just wanting to know a rough estimate of how many years/months/weeks/days I can except to get out of it before having to buy a new one? I leave it on for about 12 hours a day, and when i'm not using it, it runs the flurry screensaver until I move the mouse. It is set never to go to sleep. Also, if these are not optimal settings to prolong its life, what should I do? Power it off every time I leave my computer desk? Thank you very much.