Recent drop in search rank - Possible negative SEO?

Domkey Kong said:

All noted. I can see the problem and it involves news pages. When they are created they produce 2 or 3 urls depending on what news categories they are listed under. I have a developer looking into this now so should be able to fix in a few days. Once fixed, what is the best way of letting Google know? Just re-submit the sitemap I guess?

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Resubmitting the sitemaps will do the trick. I like to check the cache date in the Google Cache for one of the changed pages. Then I monitor that page in the Google cache until I see the change. You can't expect anything to start improving until it gets updated in the Google Cache. So that is the starting bell that your changes are in Google's workflow for processing.

Maybe because of the Latest upgrade of Penguin, lots of people are having this kind problem too. and lots of them are because of the new algorithm.