When I tested the latest MySQL upgrade I noticed I had left out some of instructions that accompany the other applications. So this weekend I wrote the pages “Upgrading MySQL” and “Starting MySQL on Leopard” which makes sure that MySQL is started automatically after a reboot using the new launchd program. With this you don’t need to install the MySQL startup item, it will only interfere. The new launchd scripts is also configured to automatically restart MySQL after a crash, shutdown or other failure.