I have a red and a green dot.... doesn't bother me.
Friend of mine has a hot pixel dead smack in the
center of the frame. Doesn't bother him either.
I read somewhere that if it does bother you, you
can send it to Nikon and they can map it out for
you through SW so it doesn't show up. But this
is just what I recall reading some where... so
take it with a grain.