Just downloaded Netbeans
6 beta. The slick new UI is just love at first sight (even though it's tarnished by an ugly error message).
The default browser setting for netbeans appears to be '/usr/bin/firefox' I don't have a browser there. My firefox is at /usr/lib/firefox-22.214.171.124/firefox. It's easy to change. It's the first thing that comes up when you goto Tools -> Options
This is gonna be fun.