FOG (Free Opensource Ghost) Multicast problem

I managed to get FOG up and running on everything bar multicast - I thought it might be something to do with VirtualBox until I dicovered a configuration gotcha.

If you set a MYSQL password, the installation instructions tell you to change the password in /var/www/fog/commons/config.php.

What I got was the following error message in /opt/fog/log/multicast.log:

Failed to connect to database, will try again in next iteration.

After trying mysql -u root -p to debug the password and altering the connection_timeout to 5000 as suggested elsewhere, I finally found the fix here:

http://community.spiceworks.com/how_to/show/373

Turns out I had to edit the file here as well:

/opt/fog/service/etc/config.php

Having done this, I was able to run a multicast session great!