A few followup notes:
* The site is experiencing high load right now, just a reminder to think about optimization if you're querying a lot of data or doing recursive logic.
* Switching to German worked, but on switching back, it took a page refresh to get English to show. I think a ?_234151 suffix to the URL should help clear cache; see the wiki controller for an example of how to generate a random number at the end.
Please help report and coordinate bugs and fixes on the plots-dev list -- esp. as people encounter issues and email in with questions!
If there are urgent fixes, we can do another publish today or tomorrow.