My PB - everything is perfect but not the light spot!!!

Sigh...I got a light spot on my powerbook LCD. Yesterday, I went to the Apple Store in EastView Mall and asked if there is any possible to change it because I just bought it five days ago. Bad news is that they consider one light spot is normal; therefore, I cannot change it. sigh!!! TOO BAD LA~~~ :'( 殘念！