Hi all. Recent threads about PC security prompted me to download Sygate's Personal Firewall. Before and after installing it, I ran a scan on their site, and to my relief, the scan reported that all my ports, including my NETBIOS, are now "Blocked" and in "stealth" mode.... BUT, I then went to the www.grc.com site and did a Shields UP! test, and it reported that all my ports were indeed in "stealth" mode EXCEPT for my NETBIOS (port 139), which it says is OPEN and not blocked! I think it's very strange that two different but highly regarded software security vendors would have different results on something so important as a NETBIOS test.... So, my question is, how can I make darn sure my NETBIOS is indeed blocked? Thanks in advance! p.s. Does using firewall software slow down one's PC to the point that it affects trading? Is it better to have a hardware firewall than a software one?