UPDATE (Jan 2011):
With the recent acquisition of The Planet by SoftLayer our newer servers fully comply with the separate c-class IP nameservers standard. What this means is that domains such as .de and .nl should be able to be hosted on our servers as long as your account is on one of our newer servers (Approx. after 12/2010).
If you have a .de or .nl domain and are still experiencing problems changing your DNS to point to your new Osirion account, please contact sales@osirion.co.za.