I just tried the update to the latest version of Comodo and the install/update did not go well. I tried a repair but that would not work and uninstall did not work either. A quick look on the Comodo forum shows that uninstall issues are not uncommon and there is a process to completely remove Comodo 3 which the thread says takes about 45 minutes with much registry editing involved. Good Grief!!! I don't mind a little work but this seems excessive. So, I booted to another snapshot (I love FD-ISR) and I am back in business with the prior version of Comodo. I also have a snapsot with no firewall installed. So knowing this about Comodo uninstall issues, it seems like a good time to look for alternatives before going down the Comodo road again. I would prefer free but the main thing is that the firewall have little impact on performance (like Comodo). Does that exist?