Browser Script Issue

I'm updating Palemoon (=a Firefox fork) here because I had scripting issues. I'm posting from firefox, btw. In my webmail spam,

I found one mail from me in spam. That is just possible, so feeling safe in webmail, I opened it, which apparently was the wrong thing to do. Now I'll purge the old. It goes out to lunch running scripts, for which I have a partial url.

My question concerns ~/.palemoon. How much of that has to go. I don't keep much Cache, cookies or history.