Things went kinda kablooie in a big sort of way today. A lot like the Hindinberg. The server was unrepairable and I had to do a complete restore from a backup made on Oct 16. But I was able to make a copy of the 4um DB first, which seems to have been intact, and after the server restore was complete, I reinstalled the DB, and now everything seems normal.
It seems the cause may be a faulty update with the Debian Linux distro.
Let me know if anything seems amiss.