Staudey usercooliscool What do you mean it's "still frozen"? Did you not exit the process? If so reinstalling the package won't do anything until you actually quit and restart the application.
stocc usercooliscool This is just a general question. Is there a reason you choose Virtualbox rather than either virt-manager, or GNOME boxes? I'm genuinely interested; I've always gone with virt-manager and find it ample for my needs.
SethStorm666 usercooliscool You need to enable CPU for KVM (Kernel-based Virtual Machines) in your BIOS.