To install vitualbox 4.3 successfully in DigitalOcean's ubuntu 12.04

There are 2 things you need to install if you want to run the latest version of vitualbox in DigitalOcean's Ubuntu 12.04 LTS: make and gcc

# apt-get install make
# apt-get install gcc

and then

# dpkg -i install virtualbox-4.3_4.3.6-91406~Ubuntu~precise_amd64.deb