Crunchbang Linux and VirtualBox

Crunchbang is base on Debian. However, the virtualbox is a well known issue with crunchbang. When I try to install virtualbox from the repository (the OSE - Open Source version), it won't work out of the box. A quick googling, you would find couples link related to this issue.

One solution is to install official Oracle version, which you can follow the instruction found here: VARIOUS VIRTUALBOX INSTALLATION.

Unfortunately, after adding new source and apt-get update. I got this error messages:

W: GPG error: http://download.virtualbox.org wheezy InRelease: 
The following signatures couldn't be verified because the
public key is not available: NO_PUBKEY 54422A4B98AB5139

After quick googling again, I found this page, which provide me a solution:

gpg --keyserver pgpkeys.mit.edu --recv-key 54422A4B98AB5139
gpg -a --export 54422A4B98AB5139 | sudo apt-key add -

I believe that allow me to update Debian APT key. After these steps done, I can continue and finished the virtualbox installation. Anyway, before install virtualbox-4.1, I do "apt-get search virtualbox", and found that 4.2 also available. I just simply install 4.2 instead of 4.1.