I decided to move from Pandora FMS to Zabbix. Thanks to the Ubuntu Package maintainers, this is a snap. Since I could not find a simple how-to, I thought I would share:
1. Install the server:
sudo apt-get install zabbix-server-mysql
2. Install the agent:
sudo apt-get install zabbix-agent
3. Install the front end:
sudo apt-get install zabbix-frontend-php
4. Browse to http://yourhostname/zabbix
5. Login as admin with a password of zabbix
6. Change your password immediately by clicking on the profile link to the top right and clicking the Change Password button.
7. Follow the Zabbix QuickStart Guide and you are off!