Spybot 1.6 does not seem to be detecting Firefox. I recently formatted my system and reinstalled Firefox using MozBackup which restores all of a profile's settings and extensions. I then installed Spybot and it does not show Firefox Immunization. This isn't the first time I've used MozBackup; just the first with an issue with Spybot not detecting Firefox.
Firefox 3, Vista SP1 32bit, Spybot 1.6
Firefox 3, Vista SP1 32bit, Spybot 1.6