With VirtualBox 2.1.2 on Intrepid (binary packs from Sun) it is enough to stop kvm service to unload the kvm module.
$ sudo /etc/init.d/kvm stop
With VirtualBox 2.1.2 on Intrepid (binary packs from Sun) it is enough to stop kvm service to unload the kvm module.
$ sudo /etc/init.d/kvm stop