Today, after almost a full year of use, I noticed that I had a few dead pixels lingering in the middle of the screen. It hadn't been there the day before, and I am very delicate with my Ipod. I have AppleCare, but will Apple take care of this issue? P.S. It now seems like they come and go. There were four dead pixels, but it seems after it warmed up a little bit, some of them went away. Is this something I should be concerned with?