Why using Virtualization is making system hangs?

[PM]

On Mon, Jan 2, 2012 at 10:11 PM, Nils Kassube <kassube at gmx.net> wrote:

>> Also, "Ctrl+Backspace" makes the logout
>> of the host irrespective of the guest distribution in VM, is it
>> normal?

> Sure. Your virtualized guest system is just another application for your
> host system. If you decide to logout, the host expects you to know what
> you are doing, i.e. it will shut down your virtualized system like all
> other applications which are in use.

Okay, what I though that "Ctrl+Backspace" would rather logout the user
just in the guest but it made the log out of the host.