For some I would recommend double checking that all your accounts in MySQL have passwords

# mysql -u root -p

mysql> select user, host, password, select_priv, update_priv, delete_priv, insert_priv from mysql.user;

If you need to set a password for a group.  Do the following: 

mysql> set password for 'root'@'localhost' = password ('newpassword');

Run the following again to double check:

mysql> select user, host, password, select_priv, update_priv, delete_priv, insert_priv from mysql.user;