It may be a MAC thing. In my PC, I never required 8.01, and similarly, 9.0 is up-to-date.
UserAgent: Mozilla/5.0 (Windows NT 5.1; rv:9.0) Gecko/20100101 Firefox/9.0
A minority may be right, and a majority is always wrong. ~ Henrik Ibsen Win 10 HP Pavillion desktop , 8GB , Avast2016 , Zone Alarm Firewall, Seamonkey 2.46, Firefox 50.1, Thunderbird 45.7, also Toshiba Satellite laptop, 4GB, Win 10, , Chrome 55