Graphic/performance fix for Ubuntu was tested with Ubuntu 13.04, 12.10, and 12.04. Part of this solution applies where aero / transperancy is used including d3d games. RAM requirements Recommended graphic memory or virtual ram for aero based operating systems is 256 MB min.ram -768 MB for 13.04 Virtual machine settings enable 3d support in virtualbox 3d settings terminal commands: /usr/lib/nux/uni