Thank you everyone for your comments and suggestions.
I will experiment with Mate
The application is intended for use in a homeless shelter.
One staff member will oversee the machine.
Clients using the shelter will access the net for job search and email communication.
I intend to set up a browser in Kiosk Mode.
The kiosk mode will be close to the public library model.
I intend to place an 'OpenDNS' (if I can) on the system.
We'll check the organization's modem *firewall* for settings.bb333
- thank you for the reference to fluendo.com.
Question: Is Mate considered 'plain old debian'?
Plain old debian is going to be the most stable. Debian is also legal to restribute. Linux mint offers versions without the illegal codecs in their download section.