I installed Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.3) Gecko/20040922 Firefox/0.10 a few hours ago, in place of the 1.0PR release; this is a nighly update to the PR release. Just a few minutes ago, I opened Spyware Blaster 3.2, which showed no protection at all for Firefox, and stated that there were no profiles for this installation (or words to that effect.) I closed Firefox, relaunched Spyware, still no FF protection. I opened FF again, then Spyware, and that time Spyware Blaster decided to stop being coy, as it now indicated full protection for Firefox. While I realize that there's probably no absolute way of knowing what happened, conjectures gladly accepted.