maybe a good usefull tip against virusses that attack you prtection programs is to install the m in a different directory then the standard 1.
the virus will look for instance only in the root c:/ program files/norton av.
just before u install,create in folder program files a folder security.while installing av or firewall whatever select the security folder to be installed in.like that the virus cant find it cuz it doesnt know where to look.