anarki - 8:35 am on Sep 19, 2013 (gmt 0)
thank you (ember, nomis5, explorador, levo), and I have disabled adwords compaign. meanwhile I sent an email to adsense support team to confirm what exactly happened. will come back later.
@nomis5, I read your link, and it says if you have good, unique, useful website, yes, your site will be allowed to use other traffic source.