Yes, I'd RMA it for a dead or stuck pixel. In fact, I had to return my SECOND HP Pavilion laptop just yesterday because the replacement one they send me also had a dead pixel. I'm giving them a third try in hopes that they finally get the clue to test the monitor before it gets sent out to make sure there's no dead pixel.
Why not go with a different notebook? Cause the zt3000 is thin, a little lighter, and has a 15.4" wuxga screen, and for the price i'm paying, ~$1500, it better be flawless, especially out of the box!