Temporary workaround : uninstall Virtualbox and install Virtualbox-4.2 from Oracle repositories. See here for instructions : http://www.ubuntuupdates.org/ppa/virtualbox.org_contrib?dist=precise
Temporary workaround : uninstall Virtualbox and install Virtualbox-4.2 from Oracle repositories. See here for instructions : http:// www.ubuntuupdat es.org/ ppa/virtualbox. org_contrib? dist=precise