I have been bothered by NySQLd.exe using 460 MB of RAM. For a small database, shouldn't it be using only 50 MB? So I attempted to change the configuration file, to reduce the RAM usage.
Unfortunately I must have screwed something up. The MySQL server no longer starts up. It starts, then exits after 3 seconds. The logs show no events at all, and so does the command-line. Fortunately, I made a backup of the ID mapping project, HammerHost folder, and other stuff 3 hours ago. I will attempt to restore the database with that. About 20-40 users will be lost, unfortunately.
Players posted right now will not be lost!
The IDMP server program logs all posts that BL servers submit to it. So using the log file, I can re-construct the tables and make up for all that lost data.