Just in case it's helpful, here's my NetBeans setup (in outline form):
Downloaded the Ruby pack.
It's a shell script. Run it as root. Don't install GlassFish.
It installs to /usr/local/netbeans-6.8.
To uninstall: /usr/local/netbeans-6.8/uninstall.sh
There is a menu item to run it.
Installed the Python plugin:
Installed the PHP plugin.
Installed the Cucumber Features plugin.
Installed the nbgit plugin by downloading it manually.
Installed the jVi plugin by downloading it manually.
Tools >> Options:
Click Control-V to enable rectangle edit.
Unclick Control-W so I can close windows quickly.
Set the default font to Monospace 12:
Make sure you're not setting the whitespace category.