Well, my system was running great until I started reading this forum and felt that I needed to change something. I decided to try Kerio out, and despite warnings that I had "ZoneAlarm installed", I proceded to install it anyway. I figured it was just a test, what could it hurt? I was planning on shutting down one when the other was running anyway. Bad idea, now I am headed for an inevitable clean install of Windows. Whatever it did it must have somehow messed up my registry, because now my system hangs on startup and I can't seem to run my antivirus (despite reinstalling it several times). "There is a problem communicating with the NOD32 kernel." This is after uninstalling Kerio. I did an online scan with Trend Micro, and it didn't turn up anything. Once I get Windows initialized everything seems okay, but there are some serious lingering problems. The two firewalls don't play well together, heed the warnings.