Vista - Windows Firewall ALWAYS Blocks Incoming Traffic

With Vista Home Premium x64, I can't get Windows Firewall to stop blocking incoming connections. As administrator, I have gone into Control Panel->Administrative Tools->Windows Firewall with Advanced Security, then clicking on Windows Firewall Properties, I set each of the Profiles (Domain,Private,Public) to allow incoming connections. Then I chose to Log Dropped Packets and Log Successful Connections. Now whenever I get inbound connections, I get messages in my firewall log saying those connection attempts have been dropped, such as:

2009-03-17 14:58:27 DROP TCP 192.168.0.100 192.168.0.104 1024 5009 52 S 2450412696 0 65535 - - - RECEIVE

But I've set the firewall to allow incoming connections. Soooo, I dont get it? How Windows Firewall log that its dropping connections when its set to allow incoming connections. Now I honestly wouldn't care, except that even if I turn Windows Firewall off I still can't receive inbound traffic. I have no idea what's going on. Does anyone have any suggestions?! I've been working on this and googling for 7 hours!

Have you installed any anti virus on the system. If yes then check its firewalls. If not then try to disable the windows firewall for sometime.