A few weeks ago, during a system update, my brother (who owns the server) accidentally deleted my whole database. (Bad, bad Dan! Don't you know backups are the source of all happiness, or at least a lot of it?)
I finally had time to recover it from an old backup. I lost my dotplan data for the last 3 months, but that's not a very big loss. Fortunately, I haven't been blogging much. (I know, bad excuse.) In the process, I changed the engine to sqlite3, so this can't possibly happen again.