public static function invalidateDistribution($distributionId, $paths)
	{
		if (!extension_loaded('openssl'))
		{
			self::__triggerError(sprintf("S3::invalidateDistribution(): [%s] %s",
			"CloudFront functionality requires SSL"), __FILE__, __LINE__);
			return false;
		}

		$useSSL = self::$useSSL;
		self::$useSSL = true; // CloudFront requires SSL
		$rest = new S3Request('POST', '', '2010-08-01/distribution/'.$distributionId.'/invalidation', 'cloudfront.amazonaws.com');
		$rest->data = self::__getCloudFrontInvalidationBatchXML($paths, (string)microtime(true));
		$rest->size = strlen($rest->data);
		$rest = self::__getCloudFrontResponse($rest);
		self::$useSSL = $useSSL;

		if ($rest->error === false && $rest->code !== 201)
			$rest->error = array('code' => $rest->code, 'message' => 'Unexpected HTTP status');
		if ($rest->error !== false)
		{
			trigger_error(sprintf("S3::invalidate('{$distributionId}',{$paths}): [%s] %s",
			$rest->error['code'], $rest->error['message']), E_USER_WARNING);
			return false;
		}
		return true;
	}