Security update for SM, requires SM2.2b1 (not a final version). Check the Release Notes. It is based on Firefox5. Several major addons are not compatible.
UserAgent: Mozilla/5.0 (Windows NT 5.1; rv:5.0) Gecko/20110619 Firefox/5.0 SeaMonkey/2.2
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