The TM database got into a bad state and stopped serving requests during last night's site update. This made TM and the forum inoperable for about 8 hours. I restarted the process this morning and the site is functional again. This hasn't happened in quite a while, and of course it happened on the night when I launched the site update late and didn't check on it until morning. I'm running the update again now and will keep an eye on it.