Wget failing on Drush dl

Hi,

I installed Quickstart on the latest version of Ubuntu and I immediately ran into problems when connecting to the internet.

I eventually played around with the network adapter settings in VirtualBox and after changing the adapter to bridged I could connect to the internet.

The problem I'm facing now is that for some reason wget is failing on a DNS lookup when I run drush dl.

I'm a bit of a noob when it comes to Ubuntu and networking in general. I have attached a file of the commands I'm running and the output I see hopefully someone can see where I'm going wrong.

Thanks in advance!

Tom