mysql checking for corrupt

[madunix]

i just installed mysql server, am getting the following warning when i
stop start mysql
madunix at netbook:~$ sudo service mysql restart
[sudo] password for madunix:
 * Stopping MySQL database server mysqld                                 [ OK ]
 * Starting MySQL database server mysqld                                 [ OK ]
 * Checking for corrupt, not cleanly closed and upgrade needing tables.
madunix at netbook:~$
Linux netbook 2.6.28-13-generic #45-Ubuntu SMP Tue Jun 30 19:49:51 UTC
2009 i686 GNU/Linux
madunix at netbook:~$ madunix at netbook:~$ mysql -u root -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 77
Server version: 5.0.75-0ubuntu10.2 (Ubuntu)

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| cacti              |
| mysql              |
+--------------------+
3 rows in set (0.00 sec)


-mu