MySql server restarting on its own

Hi,

I'm using Radius with MySql. It appears that after few authentications, Radius cannot reach MySQL database anymore.
I sometime get "Error 2006: MySQL server has gone away" and some times "ERROR 2002: Can't connect to local MySQL server through socket". I'm nit sure what's going on. I enabled logging with MySQL and all I can see is incoming SELECT statements and MySQL restart messages. It seems to be restarting every 10-15 seconds.

PLease see the MySQl log that shows it restarting...a new entry appears every 10-15 seconds:

/usr/local/mysql-debug-4.0.20-sun-solaris2.9-sparc/bin/mysqld, Version: 4.0.20-debug-debug-log, started with:
Tcp port: 3306 Unix socket: /tmp/mysql.sock
Time Id Command Argument
/usr/local/mysql-debug-4.0.20-sun-solaris2.9-sparc/bin/mysqld, Version: 4.0.20-debug-debug-log, started with:
Tcp port: 3306 Unix socket: /tmp/mysql.sock
Time Id Command Argument
/usr/local/mysql-debug-4.0.20-sun-solaris2.9-sparc/bin/mysqld, Version: 4.0.20-debug-debug-log, started with:
Tcp port: 3306 Unix socket: /tmp/mysql.sock
Time Id Command Argument
/usr/local/mysql-debug-4.0.20-sun-solaris2.9-sparc/bin/mysqld, Version: 4.0.20-debug-debug-log, started with:
Tcp port: 3306 Unix socket: /tmp/mysql.sock
Time Id Command Argument
/usr/local/mysql-debug-4.0.20-sun-solaris2.9-sparc/bin/mysqld, Version: 4.0.20-debug-debug-log, started with:
Tcp port: 3306 Unix socket: /tmp/mysql.sock
Time Id Command Argument

Any suggestions? Let me know if you need more information.

Thanks