penalty are for two reasons one is black hat seo and the another is linkfarm or content farm... if you have done any of this then surely google has penalized your website..
This is what i came to know - if you check your site in ragepank.com - redirect check tool, you redirected all your home pages of different verisions (.asp, .pl, .php, .xhtml) is a 302 redirection (temparory redirection), which is not a search engine friendly, this might cause you a duplicate content issue. So better you redirect it to 301 (permanent redirection) a SE userfriendly one... act early if not your site gonna deindexed from Google