I am running two system, one with XP Pro SP3 and one with Win7 Enterprise 64bit SP1.  Both are running NIS 2011 with Firefox 5.0 and IE 8.  For the last several weeks both Quick and Full System scans have been detecting and supposedly removing exactly 50 tracking cookies.  That is to say if i immediately rescan the systems, it comes up clean.  However, if I run Firefox (with internet connected), the 50 reappear in the next scan.  Firefox Options>Privacy was set exclude third party cookies, but now keeps showing up accepting them, and there is indeed a list of cookies, including a rogues gallery of the most notorious privacy invaders in the industry, that refuse to be deleted.  I've run the Norton Power Erast tool and scanned the XP system from the NBRT.  Both come up empty (no detection).  Interestingly, in IE8 (cookies set the same as Firefox), I was able to delete the cookie site list.

Is anyone else seeing this problem, and has anyone found a way to permanently get rid of the infestation?

-- Jim