(Apologies for cross-posting.)
We've been noticing an issue with lock-ups on the beta cluster application servers for the past few days. It happens about once or twice a day.
It just happened again on both application servers, and I'd really like to try and get to the bottom of things this time. I'll give up and force a restart if I haven't figured it out by 6:30 UTC, about an hour from now. Please accept my apology if this is disrupting your development or QA work, and ping me on IRC if you need Beta back up urgently.