I met these days weird at Stealth Settings. I didn't have much anymore to rip all database, because of strange characters †and Â, appeared overnight in most posts. I thought it would be an error at SQL.
I didn't realize which characters weren't “digested”, but it was certain that something at Encoding was not going as it should. Nor did Google stay for nothing. In two days, these wonders indexed in the search engine appeared.

The problem is quite stressful but can be solved very easily.
In the file config al WordPress, wp-config.php, Replace the lines :
define('DB_CHARSET', 'utf8');
define('DB_COLLATE', '');
cu:
// define('DB_CHARSET', 'utf8');
// define('DB_COLLATE', '');
“//” Cancel the line. Of course, the same effect would be if you wipe out all two lines.
After making the above changes and saves the WP-Config.php file, everything is back to normal.