Hi Edward,
Yep, I believe there has been some problems with this in Firefox, though updated bar should help.
Another thing is, go to the bar, on the left is the FamilyHistory Logo, with an down arrow - Click this and you will see various options:
Upgrade
Tell A Friend
And lower down is: Refresh Toolbar
Either try upgrading or clicking the Refresh Toolbar.
You will also see on this menu some good additions - I love the EMail Notifier (found under Toolbar Options), it can regularly check your email accounts for you and let you know when you have mail - brill
Cheers,
Dave