My question involves defamation in the state of: NJ

I don't have any idea where to post this so I'll post it here. I was minding my own business when I decided that it was "me" time if you catch my drift. So I go to a porn site, and all the sudden Firefox freezes up and a box comes up saying "Firefox has performed an illegal action".

What happened?

I turned my computer off and got on my laptop. Did Firefox alert my authorities? I'm 17, so porn is illegal for me. But will I get in any legal trouble because of this? I'm really freaked out.

Thanks