Revit 2010 & ADT and AutoCAD Architecture problems

Richard Binning in his "Beside the cursor..." blog details a problem with ADT and AutoCAD Architecture after installing Revit Architecture 2010 on workstations with existing ADT and AutoCAD Architecture installs.

...After installing Revit Architecture Suite 2010, I was suprised to find out that my install of Architectural Desktop 2007 would no longer allow me to drag and drop palettes from the content browser to the application...