Just to make this once more clear and for good, penalties for high keywords exists. But that is one of several values that are involved. One of the penalties is rankings drop or the other is ban. Depends. I created a page for myself and my team (for internal view), which you might would like to have a look at for further help:

Keyword Stuffing - SEO Workers

We hope that our new (updated) seo analysis tool will be ready on the 15th of October, which we will provide a module calculating and showing the above values for pages being tested.

$0.2

__________________
"Being an expert isn't telling other people what you know. It's understanding what questions to ask, and flexibly applying your knowledge to the specific situation at hand. Being an expert means providing sensible, highly contextual direction." Jeff Atwood
SEO Workers - Search Engine Optimization Consulting Company | SEO Analysis Tool | Webnauts Net SEO