Not sure if this is something about my configuration, but I'm having many issues with the new release (Vista Business 32-bit).
First of all, I've reinstalled the OS last night, put COMODO on there as the first thing. Afterwards, windows update failed to work. It kept giving me Error Code 80070643 message. The only way to fix it was the remove COMODO, run the update, then reinstall the firewall. Disabling it didn't work (service and all), and I've played around with all settings possible for the firewall and Defense+. There was nothing in the logs or my pending files, update just didn't work with COMODO installed.
The next thing is that Defense+ "Train with Safe Mode" doesn't always prompt me about some executable. Sometimes it does, other times it just sends them to the pending files. I'm assuming that this mode should always prompt, no?
Finally, the firewall doesn't ever prompt for incoming connections. I used the stealth port wizard, and then verified the settings manually. All incoming connection attempts always get blocked without any message about it.
Still, very happy to see the new release. You guys made a great product; I used to run Kerio (now Sunbelt) firewall on all my machines... Have now switched them all to COMODO. Hopefully these bugs will be fixed in the next release

[edit]
Hm... I can't even seem to configure a custom policy to ask me about incoming requests. I'm trying to connect to my Vista machine (192.168.1.60) from the old XP one (192.168.1.50). All applications in the security policy (only 3 - COMODO Firewall, svchost.exe, and System) were changed to allow outgoing, ask for incoming, block and log all else. I've also added a global rule to allow incoming from 192.168.1.50 to any ip/port. Still, when I try to make an smb connection I get messages in the log about System being blocked from accepting that connection. Anyone know why it's doing this?
[edit2]
Removed the global allow rule, changed the ask for incoming to allow... Can now connect. Looks like a bug to me - ask rules seem to block without ever asking.