Belarc Advisor may be pretty good auditing software, but they really need to read up on security.
Users are posting the HTML reports it generates on to the web, which include the OS key.....
http://www.google.com/search?q=%22Windows+XP+Professional%22+%22Belarc+Advisor+Current+Profile%22+key%3AOK, it is a bit stupid for people to post the innermost secrets about their PC configuration to the web in the first place, but (as any programmer will know) user stupidity is a factor that software should account for!