Heads up - noew that 3.11 is out, there is a patch in upstream virtualbox which is not in vbox 4.2.16 that is necessary otherwise the kernel modules wont compile for 3.11 kernel. The file needing fixing is /usr/src/vboxguest-4.2.16/vboxsf/dirops.c I am happy to send the required patch if its needed. Gene/