Missing Property Mapping Fields in SSP User Profile Properties

Today I was configuring user profile properties for a SharePoint intranet site and ran into a problem where I couldn't see the property mapping settings when configuring an individual property:

The actual error reported is:

Note: The selection of directory service properties is disabled because the portal is in an untrusted domain or no directory service import is configured yet. 

After much Google searching I found an archived post from the now defunct site http://paulhorsfall.co.uk.  The fix suggested is that the SSP application pool must use a domain account.  My SSW app pool had been configured to run under a local account...

To fix:

1. In Central Administration, go to Operations
   
2. Click the Service Accounts link
   
3. Click the web application pool radio button then select the application pool for your SSP in the drop down list
   
4. Change the account to a domain account and click OK
   

When the app pool has restarted, the mapping properties should be available again:

Thanks to Paul Horsfall for initially reporting this fix!