установил mysql 4.0.12. Запускаю mysqld_safe &, он запускается и тут же завершается. В логе вот что:

031128 13:20:11 mysqld started 031128 13:20:11 InnoDB: Operating system error number 13 in a file operation. InnoDB: See http://www.innodb.com/ibman.html for installation help. InnoDB: The error means mysqld does not have the access rights to InnoDB: the directory. InnoDB: File name ./ibdata1 InnoDB: Cannot continue operation. 031128 13:20:11 mysqld ended