i installed and reinstalled with and without the 1.5.2 update(now i'm using the 1.5.2 update). to be honest, i'm not sure if i immunized firefox in the 1.4 version, but i do have it immunized now. i'm looking at a lot of the reports in the 1.4 version, and it has all tracking cookies in the reports.
i've been trying to look to see if i have just tracking cookies in my ad-aware reports, but i can't find the reports. the next time i run ad-aware i'll see what it finds, but it usually finds the same 3 critical objects and 14 negligible objects.
i see what you're saying and it makes sense. i never noticed that spybot always picks up tracking cookies, but its never picked up trojan horses or other serious threats like that. i think spybot now is just preventing the cookies from coming with the firefox immunization, and before the cookies would always come up because i didn't have it immunized in the 1.4 version.
thanks for your help zenobia.