Restricting rollover highlighting to improve performance

Try setting the SELECTIONPREVIEW system variable to 2 if the rollover highlighting functionality degrades performance in large drawings. This will restrict rollover highlighting to only be active when prompted for object selection from within a command. This can also be set from "Options->Selection->Selection Preview group".

Use Profiles to Transfer Settings Between Computers

Once your AutoCAD environment (file paths, drafting settings, colors, etc.) is just the way you want it use Tools/Options/Profiles/Add to List and then Export it as .ARG file anywhere on your network. Later when moved to a different computer simply go to Tools/Options/Profiles/Import to Apply your settings. Read more on Workspaces and Profiles from AutoCAD Help/User's guide/The user interface/Customize the Drawing Environment 

Split Tables Into Columns

Did you know that Tables can now be broken into multiple parts but still be part of the same table. At the bottom of every table object is a triangular grip. Click and drag this grip to set the breaking height for the table. 

Full Un-install of Civil 3D 2012 Instructions

Issue:

There are instances when you may experience problems or issues with the original

installation of AutoCAD® Civil 3D® 2012. In these cases, it is strongly recommended

that you completely remove AutoCAD Civil 3D 2012 from the system and then perform

a new installation on the system.

Solution:

To uninstall AutoCAD® Civil 3D® 2012 and remove any remnants of this product from

the system, follow these steps:

·         Backup any customizations if needed

·         Remove programs in this specific order using Add/Remove programs from Control Panel

o    Autodesk Material Base Resolution Image Library 2012

o    Autodesk Material Library 2012

o    AutoCAD Civil3D 2012

o    Autodesk Storm and Sanitary Analysis 2012

·         Restart Computer

·         Delete: C:\ProgramFiles\Autodesk\AutoCAD Civil 3D 2012

·         Delete: C:\Users\<user>\AppData\Roaming\Autodesk\C3D2012 (for each user that has used C3D on machine)

·         Delete: C:\Users\<user>\AppData\Local\Autodesk\C3D2012 (for each user that has used C3D on machine)

·         Delete: C:\ProgramData\Autodesk\C3D 2012

·         Delete: HKEY_CURRENT_USER\Software\Autodesk\AutoCAD\R18.2\ACAD-A000:409

·         Delete: HKEY_LOCAL_MACHINE\Software\Autodesk\AutoCAD\R18.2\ACAD-A000:409

·         Restart Computer

Broken Data References

If you are experiencing broken data references in AutoCAD Civil 3D 2012. It is due to a known issue in service pack 2. If you haven't yet upgraded to service pack 2 yet hold off. A fix is in the works.