If you specify a base DN that contains a space, for example, o=U.S. Government,C=US at Sun ONE Directory Server 5.1 configuration time, the resulting DN is truncated to Government,C=US. At configuration time, the DN should be typed as o=U.S.%20Government,C=US.
Workaround: To correct the base DN entry, follow these steps:
Select the top directory entry in the left side of the navigation pane of the Servers and Applications tab on the Console.
Edit the suffix in the User directory subtree field.