see this link;
http://securityresponse.symantec.com/security_response/writeup.jsp?docid=2007-120623-4720-99&tabid=1

It seems Symantec considers this product to be a Security Assessment Tool and so treats it as spyware. Certainly it can extract important information from a computer that might be useful elsewhere.

If you can't get Produkey to work any more, download and run Belarc Advisor from;
http://www.belarc.com/free_download.html

It does the same job but also gives a hardware and software inventory for all of your computer. As far as I know it is not treated as malware by any anti-virus or anti-spyware software.

Mark