*** set a breakpoint in malloc_error_break to debug
httpd(60406) malloc: *** error for object 0x2af7070: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
httpd(60412) malloc: *** error for object 0x2ae0004: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
httpd(60412) malloc: *** error for object 0x2af7070: pointer being freed was not allocated
*** set a breakpoint in malloc_error_break to debug
[Sun Oct 21 13:13:18 2012] [notice] child pid 60414 exit signal Segmentation fault (11)

// ContentMedia model
public function purifyHTMLText(){

    $CI =& get_instance();

    $this->imageCredits = $CI->applibrary->doPurify($this->imageCredits);
    $this->contentCopy = $CI->applibrary->doPurify($this->contentCopy);
    $this->extraCredits = $CI->applibrary->doPurify($this->extraCredits);
    $this->authors = $CI->applibrary->doPurify($this->authors);

}

// AppLibrary
public function getHTMLPurifier(){

    if(!isset($htmlPurifier)){

        $CI =& get_instance();
        $CI->load->library('HTMLPurifier');
        $config = HTMLPurifier_Config::createDefault();
        $config->set('HTML.Allowed', 'a[href],br,b,strong,em');
            $config->set('HTML.DefinitionID', 'mydef');
            $config->set('HTML.DefinitionRev', 1);
            $config->set('Cache.DefinitionImpl', 'Serializer');
            $def = $config->maybeGetRawDefinition('HTML');
        $this->htmlPurifier = new HTMLPurifier($config);

    }

}

public function doPurify($text){
            $this->getHTMLPurifier();
    return $this->htmlPurifier->purify($text);
}