Planet13 - 6:49 pm on Jun 28, 2012 (gmt 0)
Not it doesn't, for either of these. I see some illegal scraper sites when i search for my title or a part of text.
to give you my totally amateur opinion, it sounds like issues bigger than Penguin / Panda.
if there is no manual action (i.e., a penalty), then it really seems like it could possibly be some sort of technical issue.
have you gone on the google webmaster forums and posted a link to your site asking people to look at it? I know they aren't ALWAYS helpful, but there is usually one or two good ideas that are thrown around when one does this.