I got my new 20: c2d iMac and i love it! But the last couple of days i've noticed a tiny black speck on the lower, right part of the screen. I'm wondering if this is what they call a "Dead Pixel"? Say if i did have a dead pixel...what will apple do about it? I purchased the Apple Care with the iMac so I should be completely covered...What do you guys/girls think about it? Thanks in advance!