Interesting...if it's happening at the same time every time, it almost sounds like a systems glitch on their end...
I assume that you've ran various anti-spyware programs?
One usually doesn't catch everything, so it's always best to double up on it.
AdAware, combined with Spybot search and destroy usually catches everything. To be safe, boot into safe mode before running either one. That way if something is loading during windows startup, it won't have a chance to circumvent the results of each scan.
http://www.lavasoft.com/products/ad_aware_free.php
http://www.safer-networking.org/en/download/index.html
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