Fine Lines across whole display

Hi
I just received my new MacPro. On the second day I came home from work and noticed that the display seemed dimmer and their were fine lines across the whole screen. Has anybody any idea what might have happened.
Regards
Brian

Hi Tim
I contacted Apple and they went through all the tests and agreed that it has to be replaced.
Cheers
G5 Dual 2.0 and Powerbook G4 15 SD    

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