Which perhaps suggests that one of the main reasons I am pandalized is because my content has been so widely scraped perhaps, since my most heavily penalized pages have the most content?
Same problem here. My pages that are badly ranked are those that were heavily scrapped. It looks like scrappers have literally taken my positions. I know from my experience where I can rank approximately for some articles and on these positions are scrappers with texts taken from me.
We have discussed it here: [webmasterworld.com...] and there's some info on how to stop scrappers.