Background of document is white in CS but when it prints turns grey or blue

Can anyone tell me why this happens? the image background I have created is white, but when it comes off of the printer the background is light blue or grey.

This is getting to be very annoying... any help would be much appreciated.

See

http://www.adobeforums.com/cgi-bin/webx?13@@.3bb50a49/13

I will try this... thanks for your help.