Planet13 - 2:57 pm on Mar 11, 2012 (gmt 0)
What exactly is the content on the paginated pages (the -p2.html, -p3,html, etc.,)?
Is it just the signers name and city of residence? And also the brief description (which is duplicated from the main page)?
My first thought is that I would no index those paginated pages, but I don't know enough about your site to say whether those pages might be considered "thin" by Panda or not.
Have you checked, double checked, and triple checked that you don't have any technical errors on the main petition pages?
But I would think about whether I really want google to index the pagination pages at all in the first place.
(If moderator allow, then I can share the site usls)
While you can't do that here, I think you can put it in your user profile.