MySQL ne démarre pas sous Snow Leopard

J'obtiens cette erreur en essayant de démarrer le serveur mysql.

$ sudo mysqld_safe --user=mysql
110425 23:11:33 mysqld_safe Logging to '/usr/local/mysql/data/unknown-e0-f8-47-0c-04-a0.lan.err'.
110425 23:11:33 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
110425 23:11:35 mysqld_safe mysqld from pid file /usr/local/mysql/data/unknown-e0-f8-47-0c-04-a0.lan.pid ended

Des suggestions ?