Convert all your database character sets to utf8, trying to follow Codex guides.
Convert all your database character sets to utf8, trying to follow Codex guides. You should use this if you are experiencing double utf8 encoding. You can check this by setting DB_CHARSET in your wp-config.php file to latin1 or commenting the line; if your characters look good now on your site than you are probably suffering from this issue.
It works by scanning all you tables and columns and generating a list of SQL statements which allow you to convert to convert your content to uft8.
!!! CAUTION !!! The execution time of the next SQL statements may take a lot of time(even days), related to dimensions of your database and the amount of the content.