Hi there, Sam from Discourse.
Just a few notes:
letter avatar proxy is playing up, I would disable it ASAP and either point letters directly at us or figure out why it is having issue proxying letter images. As a QUICK workaround you can just default people to use the same avatar by default.
https://community.ubuntu.com/letter_avatar_proxy/v2/letter/s/5f9b8f/240.png takes forever to load and this is causing huge issues on the site.
Your link is a 404:
Also having issues switching to a gravatar, something is off here, maybe the web server can not talk to the outside world?
Overall for the move! Really hope this community takes off!