FLICKERING SCREEN after installing the Civil 3D 2011 update

A client brought this to my attention after installing the Civil 3D 2011 update on a 64 bit machine.

We found a fix online.  Type 3DConfig in the command line.  Click on Manual Tune.  Uncheck, then recheck “Enable Hardware Acceleration”.

http://forums.autodesk.com/t5/AutoCAD-Civil-3D/Civil-3D-2011-Update-1-is-now-available/m-p/2784052/highlight/true

Thanks for pointing this out Eric