update robots.txt to disallow makepdf.php?

[michael_centos]

Currently web searches return results like this:

http://www.centos.org/modules/newbb/makepdf.php?type=post&pageid=0&scale=0.66&post_id=160061

Which is really annoying, as some searches only return the pdf of a single post and the topic search result will be pages down.

Can someone review the robots.txt and add add in appropriate "Disallow: xxx" lines?

Thanks,
Michael