MacScan found
this tracking cookie on both my boot volume and a back-up volume.
The plist, when opened in TextWrangler, looked exactly the same after it was replaced, when it tested negative, as it did beforehand, when it tested positive. (Sorry, but I screwed up and forgot to save the "tainted" file.)
Can somebody explain how the cookie attaches to a plist and why it isn't apparent that it's there?
Thanks.