Firefox has given us some hoops to jump through in its latest releases. When you connect to FarFinder using Firefox 3 you'll see this page:

You need to:
You have to go through this process because FarFinder uses a self-signed security
certificate to protect your data. You can read more about this on the
security page.
All browsers display a warning about self-signed certificates - you'll see this when you connect with
Safari, for example - but this latest version of Firefox has chosen to take this further and give you
more hoops to jump through.
The nature of FarFinder makes using a self-signed certificate necessary. Because you are connecting to
your own computer, you shouldn't worry about it. However, if you see it when connecting to other sites, you should heed the warning!
This is a Firefox bug. Try the following: