I have GhostWall installed, it's running. It's keeping track of incoming and outgoing data. Other than that, it doesn't seem to do anything. I also have the SP2 Windows Firewall running, so I suppose I might not be seeing anything happening because it catches everything before GW would need to do anything? I'm perfectly happy with having it work without bothering me, but at the same time it's comforting to have it pop up with "an attempt to contact you through X port was blocked".