White lines through PDFs created in Word (landscape orientation)

Hi,

When I create a PDF with PDFCreator in Word (2010) with a landscape orientation, white lines appear through the PDF.

See the difference between portrait and landscape with the same image:

http://www.mediafire.com/?9xpxw3399xs66bl (portrait)

http://www.mediafire.com/?cn57tc7n3uzdc1c (landscape)

The Word document I'm trying to convert into a PDF is in landscape. Any thoughts as to how I can solve this problem?

Thanks for you help!