View Cube Flashing non stop after applying Update 1 to Civil 3D 2011

Issue:
You notice the ViewCube is constantly flashing.

Software:
Civil 3D 2011, Cube behaviour started immediately after applying Update 1.

System:
XP Pro SP3, 4GB Ram

Attempted:
Turning hardware acceleration off had no affect.

Resolution:
Toggle Hardware Acceleration on and off SEVERAL TIMES, close AutoCAD and launch