This ruined my day.
This for the Galaxy Nexus owners. And this might upset you.
Go to the Play Store or some app that needs to load its content. Rotate your phone to landscape, with the front facing camera near your right hand. Look at the place where the navigation bar is. Mine is almost white in colour with the clear imprint of the keys. This is not ghosting, this is permanent burn-in.
I turned my device off for several hours but I just turned it back on and the mark is still there. And now, I keep noticing it. When I'm texting landscape. When I'm in any white/yellow, or so page.
This sucks. It really does.
I can't stop looking at it.