AutoCAD Incompatibility
Autodesk's AutoCAD 2007, AutoCAD 2008, AutoCAD 2009, AutoCAD 2010, AutoCAD 2011, AutoCAD Civil 3D 2010 and AutoCAD Civil 3D 2011 (may include previous versions of AutoCAD or AutoCAD Civil 3D also) users may experience significant crosshair (cursor) jerking and lag while Bitdefender is installed. Disabling all or any Bitdefender components does not correct the issue and to resolve it Bitdefender must be uninstalled. Autodesk advises users to uninstall and remove Bitdefender if the problem occurs.
Read more about this topic: Bit Defender