According with my promise in blog some days ago, today i have try to use Qemu and virtualbox for emulate and running Ubuntu linux on my panic! desktop. I think Virtualbox is faster than qemu for loading and running. It need less resource compared with Qemu. Virtualbox also have a builtin gui that easy to use for beginner. Here is the screenshot:

(QEMU)

(QEMU)

(Virtualbox)

dont forget to load virtualbox module :

 modprobe vboxdrv