I used to have Comodo for both firewall and antivirus, had that for years. However it seems like the latest Comodo update killed that. What happens is that I get an error message saying that Comodo security agent can't be started, and offers to run diagnostics. The diagnostics doesn't find anything. It also makes Windows look like Windows 98. I tried to uninstall and then reinstall, yet I get the same problem again.
So besides Comodo, what good free firewalls and antivirus programs are there around these days? My system is Windows 7, 64 bit.
I currently use the Windows firewall, but I know that it is not very good.