Comment 18 for bug 292588

For users who still might want to use qemu-kvm, you can use:

sudo update-rc.d -f qemu-kvm remove

To remove the system startup links that insert the module at boot. Now if you want to use kvm, then run:

sudo /etc/init.d/qemu-kvm start

To insert the module and enable kvm.

This bug suggests that you will not be able to run both virtualbox-ose and qemu-kvm at the same time. But this workaround will at least prevent you from having to manually remove the kvm module after every boot.