Remote Desktop Gateway Service

Hi,

I'm having some trouble with Remote Desktop Gateway services in Windows 2008 R2 RTM Standard. TS Gateway worked perfectly in Win 2008 but it is not working in R2. I have the following logged. It seems like the Network Policy server cannot find the domain controllers. We are running windows 2003 AD and there are no connectivity issues. As I said, Windows 2008 TS Gateway worked perfectly. any help is appreciated!

Log Name:      System
Source:        NPS
Date:          18/08/2009 15:18:33
Event ID:      4402
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      computer.mydomain.internal
Description:
There is no domain controller available for domain mydomain.
Event Xml:
<Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
  <System>
    <Provider Name="NPS" />
    <EventID Qualifiers="49152">4402</EventID>
    <Level>2</Level>
    <Task>0</Task>
    <Keywords>0x80000000000000</Keywords>
    <TimeCreated SystemTime="2009-08-18T14:18:33.000000000Z" />
    <EventRecordID>936</EventRecordID>
    <Channel>System</Channel>
    <Computer>computer.mydomain.internal</Computer>
    <Security />
  </System>
  <EventData>
    <Data>mydomain</Data>
  </EventData>
</Event>