The filesystem on web28 has continued to go into a read-only state, so we’re taking the machine offline for emergency maintenance. We’ll update this post as soon as we have more information.
2012-12-12 00:05 UTC: The filesystem repair is complete and Web28 is back online.
2012-12-12 09:53 UTC: The filesystem is still going read-only and we think this time we have isolated the problem which persists between fscks so we are taking the server down to fix it and run a fsck again.
2012-12-12 11:47 UTC: The filesystem has been fscked one again and the server is back.