All replication stuck
Might have something to do with bug 12711.
The replication system seems to be totally stuck on the box. Last snapshot to transfer was timestamped 1403, just before the timestamp on the one that's stuck.
Further, I rebooted the destination box earlier today and the alert systems shows connection refused for all replication jobs, but no keys have changed and I've verified that I can ssh manually as the replication user with the replication key.