After contacting Noblecoin developer Rofo, we decided to re-enable NOBLE payments with a 5% increment not to be affected by market fluctuation. As you know, Mintpal requires 999 confirmations for NOBLE due to attacks which affects us badly. In this period, we have the right to refund this 5% difference partially or fully to our customers. Alternatively, our customers may request full refund in 2 hours time if they are not satisfied with the exchange rate.

As for Noblecoin gold bars, we have been following the news closely and this will solely depend on the maintenance of the coin.
You can check our Blackcoin/Fluttercoin gold bar designs from our website and see our capabilities. We hope Noblecoin to survive against these attacks.