Today, Autodesk posted Service Pack 2. It Includes Autocad 2006 SP1, Map 2006 SP1, as well as Civil 3D 2006 SP1. The service pack resolves issues in many segments of the product ie. Points, Alignments, etc.
The title of this post is linked to the Service Pack 2 download Page.
Note: You must also install Land Desktop 2006 Service Pack 1 in order to use the migration capability in Civil 3D 2006 or if these two products are both installed on the same machine.