Could this have anything to do with the correlation in time between the initial outbreak of the Sausser worm and the release of BD on or about the same day?

I had a similar problem on the Thursday after I bought and installed game and did not think that it had anything to do with BD. Just figured it was a nasty combination of viruses/trojans and/or spyware, all of which were found upon running various utilities. Screwed up not only norton, but windows and internet explorer. After restoring, I reinstalled norton and then BD and am having no problems. Hope I havent spoken too soon,