I updated to 1.6.2 and when immunizing it says there are 32.000 un-immunized entries, all of them for Firefox, all other are immunized. When I click Immunize, it doesn't do anything - progress bar starts to move slowly, but nothing happens.
I'm using Firefox 3.1 Beta 2 (the same version I was using with 1.6.1).
I scanned the computer with Spybot, Norton Internet Security 2009 (installed & running) and online Bitdefender scan. They found nothing.