public function isOwner( $user = NULL )
	{
		$user	= $user ? $user : get_current_user();
		if( !function_exists( 'posix_getpwuid' ) )
			return TRUE;
		$uid	= fileowner( $this->fileName );
		if( !$uid )
			return TRUE;
		$owner	= posix_getpwuid( $uid );
		if( !$owner )
			return TRUE;
		print_m( $owner );
		return $user == $owner['name'];
	}