If that is Curious Labs' answer then we have a problem. If there is nothing sent over the Internet, then why is it trying to dial out over the Internet? And it IS trying to do that. Zone Alarm, Conseal, At-Guard and Norton have all confirmed this. It has now gone from bad to worse because now I am getting the distinct impression that CL is trying to, as we say in these parts,"...piss down my back and tell me its raining." An "...internal network serial number check..." would NOT, I repeat, would NOT attempt connection to the Internet! And that is what it is trying to do. Well, CL had their chance. And their answer(s) appears to be less than forthright. It is time to start looking for a different application. Sad. I really love this little program. I think it is also time I had a chat with the folks at Gibson Research and ZDNet. Because before CL starts flooding the market with this or a 5.0, the word needs to be out about this trojan. And that, my friends, is exactly what it is. Dang, I can't even begin to tell you how disappointing this is. Dang it! After reading the explanation that Jeff H. received from CL, I can only advise that you DO NOT, I repeat DO NOT, load this patch. Their response is not consistent with the evidence we have had reported here. It is also not consistent with what they say it is allegedly checking. "Internal network serial checks" do not attempt to call out on the Internet. Ask any IT or security consultant. Dang it!