Originally Posted by jwestjr
Firefox can't find the server at start.ubuntu.com ??? Why can't this system find the Internet?
No idea, especially since you provide no details at all. The website could have been down for a few minutes, your router could have rebooted, the cable could have been loose...who knows? The site is up and available now.
If you still can't get to it, provide details...things like how you're connecting, through what hardware, using what version/distro of Linux, etc.