Please give us better details of the problem.

Something in mozilla will not let me cleanup performance in Norton.

I am not going to use mozilla anymore. you do not help with problems you created.

rdemarch said

Something in mozilla will not let me cleanup performance in Norton.

What do you mean by this? Please give details.

Mozilla Firefox or Firefox is the name of browser as Mozilla is the company. Also the majority of posters here are users helping users unless you see a Administer tag below name.

Firefox does not impact separate applications like this. This is a Norton ativirus issue so you could post at https://community.norton.com/forums