Вот нагрянула трабла
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[helios@linux libexec]$ ./mysqld
InnoDB: The first specified data file ./ibdata1 did not exist:
InnoDB: a new database to be created!
040728 11:47:30 InnoDB: Setting file ./ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
040728 11:47:30 InnoDB: Log file ./ib_logfile0 did not exist: new to be createdInnoDB: Setting log file ./ib_logfile0 size to 5 MB
InnoDB: Database physically writes the file full: wait...
040728 11:47:31 InnoDB: Log file ./ib_logfile1 did not exist: new to be createdInnoDB: Setting log file ./ib_logfile1 size to 5 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Doublewrite buffer not found: creating new
InnoDB: Doublewrite buffer created
InnoDB: Creating foreign key constraint system tables
InnoDB: Foreign key constraint system tables created
040728 11:47:32 InnoDB: Started
040728 11:47:32 Fatal error: Can't open privilege tables: Table 'mysql.host' doesn't exist
040728 11:47:32 Aborting040728 11:47:32 InnoDB: Starting shutdown...
040728 11:47:34 InnoDB: Shutdown completed
040728 11:47:34 ./mysqld: Shutdown Complete===========================================================
Как обойти такое
Выключи InnoDB в my.cnf (кажется, skip-innodb) и расскажи, что выдаст. Возможно, вылетели табл. привилегий, тогда пользуй `mysql_install_db`, альтернативно можешь создать пустые табл. привилегий (mysql.*) по шаблону на другой "живой" MySQL и просто скопировать их себе (ессно, хотя бы одну запись в mysql.user добавить нужно :)