illustrator cs5 line problem

when make line in front of background gets weird, check out, border has kind of white, green, dont know

 

http://img842.imageshack.us/img842/701/capturadetela20121225as.png

 

 

http://img805.imageshack.us/img805/701/capturadetela20121225as.png

it's antialiasing of line on background. print?

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