Removing a manual unnatural links penalty can be extremely difficult. If you've gone through the process then you're likely familiar with the mixture of excitement and fear that comes with seeing "All Messages (1)" in Google Webmaster Tools after filing for reconsideration.
Will you see "Manual Spam Action Revoked"? Or will it be the dreaded, "Links to your site violate Google's quality guidelines"? Getting the latter message means that your reconsideration request has not been successful and that more work needs to be done in order to lift your penalty.
Read more: http://searchenginewatch.com/article/2308074/8-Reasons-Your-Reconsideration-Request-Will-Fail