Slow parent :: __ construct in mysqli extended class

I am extending mysqli in a database class. I noticed that calling the parent constructor takes almost 2 seconds. Perhaps I suppose this is my environment, as I develop my desktop before deployment. But this does not seem to me very likely.

Wednesday:

• OS - Windows 7 Pro
• WAMP server
• Apache / 2.2.17 (Win32)
• PHP 5.3.4
• MySql ver 5.1.53
• NetBeans IDE 6.9.1

The code in question:

class DGMysqliLink extends MySQLi
{
    public function __construct($aDSN)
    {
        // Construct the DSN
        $aDSN['dbhost'] = (empty($aDSN['dbhost']))?ini_get("mysqli.default_host"):$aDSN['dbhost'];
        $aDSN['dbuser'] = (empty($aDSN['dbuser']))?ini_get("mysqli.default_user"):$aDSN['dbuser'];
        $aDSN['dbpass'] = (empty($aDSN['dbpass']))?ini_get("mysqli.default_pw"):$aDSN['dbpass'];
        $aDSN['dbname'] = (empty($aDSN['dbname']))?'':$aDSN['dbname'];
        $aDSN['dbport'] = (empty($aDSN['dbport']))?ini_get("mysqli.default_port"):$aDSN['dbport'];
        $aDSN['dbsock']= (empty($aDSN['dbsock']))?ini_get("mysqli.default_socket"):$aDSN['dbsock'];

        // Instantiate the object by invoking the parent constructor.
        // This takes nearly 2 seconds
        parent::__construct($aDSN['dbhost'],$aDSN['dbuser'],$aDSN['dbpass'],
                            $aDSN['dbname'],$aDSN['dbport'],$aDSN['dbsock']);

        // If there are any errors, deal with them now
        if($this->connect_error){/* Do some stuff */}
    }
}

Why does calling this constructor take so long and how can I fix it?