it sounds like the firewall driver is still present. try going to network connections properties and see if the firewall driver is present if so uninstall it.
I found the driver you reference. I tried uninstalling Comodo again, then went to uninstall the driver, but the driver was not there after the install. When I try to diagnose the problem with my connection, the message I get is that the computer cannot communicate with the DNS server (192.268.1.254). I have tried both leaving the DNS settings as they are and changing the setting while uninstalling, neither makes a difference. I am restoring my computer back to before the uninstall now.
Any other ideas?