Ho letto il log di errori che é il seguente :
070608 10:53:17 mysqld started
070608 10:53:17 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive
InnoDB: The first specified data file ./ibdata1 did not exist:
InnoDB: a new database to be created!
070608 10:53:17 InnoDB: Setting file ./ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
070608 10:53:18 InnoDB: Log file ./ib_logfile0 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile0 size to 5 MB
InnoDB: Database physically writes the file full: wait...
070608 10:53:18 InnoDB: Log file ./ib_logfile1 did not exist: new to be created
InnoDB: 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
070608 10:53:19 InnoDB: Started; log sequence number 0 0
070608 10:53:19 [ERROR] Can't start server: Bind on TCP/IP port: Address already in use
070608 10:53:19 [ERROR] Do you already have another mysqld server running on port: 3306 ?
070608 10:53:19 [ERROR] Aborting

070608 10:53:19 InnoDB: Starting shutdown...
070608 10:53:21 InnoDB: Shutdown completed; log sequence number 0 43655
070608 10:53:21 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete

070608 10:53:21 mysqld ended

070608 10:55:19 mysqld started
070608 10:55:20 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive
070608 10:55:20 InnoDB: Started; log sequence number 0 43655
070608 10:55:20 [ERROR] Can't start server: Bind on TCP/IP port: Address already in use
070608 10:55:20 [ERROR] Do you already have another mysqld server running on port: 3306 ?
070608 10:55:20 [ERROR] Aborting

070608 10:55:20 InnoDB: Starting shutdown...
070608 10:55:23 InnoDB: Shutdown completed; log sequence number 0 43655
070608 10:55:23 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete

070608 10:55:23 mysqld ended

Trova la porta 3306 occupata da un'altro servizio evidentemente qualche stupidaggine che ho installato in precedenza. Come faccio a controllare le porte, i servizi e il vecchio software ?