Imac light bleeding

[cuteale]

Hi there.I bought an 21.5 Imac from a retail store named JB HI-FI in australia 1 month ago.I found a kind of light bleeding at the left bottom corner of the screen.It is brighter.I am just wondering whether this is normal not.
Cheers.
http://imageshack.us/photo/my-images/543/phototrd.jpg/
http://imageshack.us/photo/my-images/837/69245073.jpg/