Hi folks,
We've had at least a couple of site outages which we believe are due to l10nupdate. The root cause is identified in a fairly old ResourceLoader bug that seems to be biting us a little harder than it normally does: https://bugzilla.wikimedia.org/show_bug.cgi?id=27320
Disabling l10nupdate means that changes from Translatewiki.net will not propagate to our websites as quickly as they normally do. Depending on how long it takes us to fix this, it could be multiple days.
Brad Jorsch is going to take a closer look at this issue today/tomorrow, and hopefully identify the root cause. If he's able to find the cause quickly, we may not need to disrupt the service, but we're going to plan for the worst here.
Thanks (in advance) for your patience!
Rob