I upgraded to Hardy but now can't get VBox to start. I get the message below when I try. [Don't know if it's related, but I also have lost sound upon upgrade. When I test sound, it looks like the computer thinks I'm hearing something, as the test indicators seem to be working normally--no error message or anything, just no sound. Sorry, I'm a newbie and don't know the proper terms.]

VBox error message:

VirtualBox kernel driver not installed. The vboxdrv kernel module was either not loaded or /dev/vboxdrv was not created for some reason. Please install the virtualbox-ose-modules package for your kernel, e.g. virtualbox-ose-modules-generic..
VBox status code: -1908 (VERR_VM_DRIVER_NOT_INSTALLED).

Result Code:
IConsole {1dea5c4b-0753-4193-b909-22330f64ec45}