That is a very good explanation of the auto run feature and how windows opens the file without you knowing .Especially if you are using a fileshare ,care is needed when transferring from one pc to another , if , as I do ,you use your old outdated laptop for the share so as not to keep infecting your main pc (which you use for credit card details and such).. Worst I have found is avg 8 finding viruses and disabling them , when they are not , like the alexa ie6 toolbar!