The Etherpad Lite server at http://etherpad.wmflabs.org/pad has been surprisingly popular of late, which has revealed an issue in our version. I think the issue has been fixed in the latest version of Etherpad Lite, so I'm going to hastily schedule a deployment in two hours' time. Please be aware that if you're editing a pad at that time, you may lose work.
In all the upgrade should take no longer than an hour, and I'll ping the list when it's done with.
As absurd as this is for me to be sending out a warning about taking down a labs service, this seems appropriately courteous especially given the amount of use this instance has been getting.
Thanks,