http://nambulous.wordpress.com/2008/08/23/remove-the-net-framework-assistant-10-from-firefox/
Why do I need it?
Why didn't you ask me?
- I agreed to your necessary maintenance of your OS, not for you to modify any 3rd party applications which happen to be on the machine to suit your purposes (put that in your EULA).
Why is "Uninstall" disabled?