I upgraded yesterday, suddenly I am not allowed to access my SMB shares on the machine where v3.0 is installed. I am used to agnitum, comodo 2.4 (V) (V) (V), and iptables, so defining firewall rules is not an issue for me.
Now I am back to 2.4 and happy with it. What I noticed is that, even when I disabled the firewall and defense+ and even after shutting down Comodo 3.0. I was not able to access my shares on the machine where comodo 3.0 is installed. I uninstalled v3.0, rebooted my machine and then I was able to see my shares!! It is not related to configurations, it is something totally else I think.