Ubuntu: Wordpress MU installation error (localhost.localdomain)

Such a frustrating problem this week.

Trying to set up a Wordpress MU installation on my home Ubuntu Linux server setup.

• Installed LAMP.
• Downloaded Wordpress MU.
• Copied files to Apache root WWW folder. 
  
• Created a MySQL user account.
• Created wordpress database
  
• Granted proper access to new user over wordpress database.
• Went to: localhost
• Got to this error message:

Warning!

Installing to http://localhost/ is not supported. Please use http://localhost.localdomain/ instead.

Looked around and around and around and finally came up with this solution:

> sudo vi /etc/hosts

 Change this line:

127.0.0.1    localhost

to read:

127.0.0.1   localhost    localhost.localdomain

Then you just browse to:

localhost.localdomain

Yeesh.