Downloading MySQL and installing on Leopard is a breeze with the native package.
I migrated my database (dump/restore) and recreated my wordpress user, but still kept getting this error:
Error establishing a database connection The user could log into the database from the console as shown:
` lantrix@lexx:~ $ mysql -u wordpress -p Enter password: Welcome to the MySQL monitor. Commands end with ; or \g. Your MySQL connection id is 19 Server version: 5.