Thanks Matt. Glad to know I'm not entirely crazy.
So, for giggles, I am trying to open a support case for this using my ASC. The Avid support page for this doesn't work - I enter my (brand new) S3 ASC and click Submit, the page flashes and nothing happens. Same behaviour in Safari, Firefox and Chrome. The Salesforce portal is bizarre and doesn't do anything if you try to open a case. Avid is not picking up the phone and the hold music is, well...
Wow, as a patient 16-year Digi/Avid customer with HDX etc etc this is pretty much the most spectacularly bad experience I have ever had in the pro audio industry. And that's saying something.