Lots of companies and organizations are still running Civil 3D 2012 while they await the first clean up of the new release.
Autodesk released perhaps the last Service Pack for 2012 this last Friday June 29, 2012.
Get the latest Service Pack 2 for AutoCAD Civil 3D 2012.
Here's the link:
http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=20021271&linkID=9240698
Read the README!
The SP doesn't fix everything, but what is fixed in it is significant.