Glad you found the "bug".
But for future reference, you might want to run BOTH Ad-Aware and Spybot in tandem, that is, one right after the other, and then your favorite AV program.
That's what I do and at the end of the week, there's always a few bums to toss outta the HD. A couple even come in from some merchant sites, even ones that I WOULD trust not to cheat me in an transaction.