Note to self :
when virtualbox acts up again .

1. [sdog@stillmine ~]$  VBoxManage list runningvms
2. "vagrant-etherpad_1307533136" {60697a54-35fc-44e7-96b6-008cde6995a6}
3. [sdog@stillmine ~]$ VBoxManage controlvm vagrant-etherpad_1307533136 poweroff
4. 0%...10%...20%...30%...40%...50%...60%...70%...80%...90%...100%