Not the first piece of absurd preaching to come from the SQLite team
To quote the FAQ:
(6) Is SQLite threadsafe?
Threads are evil. Avoid them.
SQLite is threadsafe. We make this concession since many users choose to ignore the advice given in the previous paragraph.
After I've realised why it's evil not to throw away 75%+ of the processing power available to my application, I'll worry about the other strictures emanating from the SQLite team.