As previously stated, I had a nightmare trying to register the product, eventually had to turn my computer over to a Norton tech to sort the issue, which I didn't like.
The product itself did what it was supposed to, it quarantined a couple of trojan horses, blocked dodgy websites and protected my data, so on that front I can't complain. However, my Mac became SO SLOW, updates were very obtrusive and the files HUGE, but worst of all the firewall seemed to block anything with Apple in the title, some days I couldn't type a word, except my password to release files, and despite ticking the box to allow them in future, the same files kept getting blocked. I also had problems with the internet, which didn't happen when I temporarily suspended the firewall. The problem was worst when browsing with Safari, (though that led me to download Firefox, which I find a far superior browser).
It was so bad that I decided I had to buy a Mac specific product to replace it.
What I don't understand is why Norton continue to churn out a product that attracts the same complaints every year, you'd think by now they would have found a Mac literate designer that could produce smaller files, and wouldn't have the word 'Apple' No.1 on the Apple Mac firewall block list!