Trying the x86 live CD, installed it on a VirtualBox virtual machine, network connectivity and guest additions are OK.
The "Register" link (which they imply is needed to get updates) gets me to an error page. The browser goes to
And then to
Which gives me a "Not Found" page.
The update manager says there are no updates. I imagine it'd say otherwise if I was able to register the OS. But I can't. Any clues?
(Fun fact: "Add More Software" and "Update Manager", if called, like the proverbial goggles, did nothing... until I tried to run them from the console and saw a message that "root password was expired". Aha. The "root shall never login" ideology was preventing them from running. OK, I gave root a password and was able to install much-needed software like gcc.)