I disagree, as one of my sites has been affected was #1 now it is on page 2 of Google - affected dont know why as all content is unique and I wait until it is cached with google before I post it on OTHER sites, so if anyone was to be punished it would be the other sites.
A major update by Google to rank the sites by removing the low quality sites from the top of Google’s result pages. At once this would provide better ranking for the sites that doesn’t have any copy content. If your site is about to cross the panda line, then the quality of pages and your site may be affected.
Its a great step taken by the Google to provide us relevant & informative info about any topic by ranking the valuable sites. And yes its true that many of the sites containing duplicate content are get affected by this algo.