Quote Originally Posted by amosjackson View Post
All of those got stuck after "HTTP request sent, awaiting response..."
... and www.google.com went OK. Weird.

I'll now leave to you to narrow it down what is going between www.google.com versus the archive.ubuntu.com sites. Try different URLs, and see what happens. Remove one (or two?) of the routers. Connector your computer to another LAN and see if it works. In other words: explore & narrow it down.

With that info, I can help you further