mysql/reset

http://www.ecualug.org/2007/04/03/forums/como_resetear_password_de_mysql

/etc/init.d/mysqld stop

/usr/bin/mysqld_safe --user=root --pid-file=/var/run/mysqld/mysqld.pid --skip-grant-tables &

/usr/bin/mysql -u root mysql

update user set password=password('passwordnuevo') where User='root' and host='localhost';

flush privileges;

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sudo apt-get remove --purge mysql\*
http://forums.linuxmint.com/viewtopic.php?f=47&t=109711