How to reproduce bug:
Create a new page with a couple of lines of content.
Create a new one and include the first one with the
include macro within the second one.
With the "Print this page" option the included
information is duplicated in screen and in the
printed version.
Sample: http://www.openwiking.com/DevWiki/ow.asp?
p=TheCode/CurrentEdits with "Print this page" option