In previous versions of CF, as reported earlier, I was troubled in booting the system by CF blocking access to svchost.exe when it was trying to issue a bootp call, part of the DHCP protocol. CF logged an alert about this shortly after (about 30 sec) the CF icon appeared in the system tray. There never seemed to be any consequence to this blocking action. Everything proceeded entirely normally. Such alerts were encountered almost every morning (that is, about 80% of the time) and never otherwise.
The new version 2.3.6.81 seems to have solved this issue: I have had two cold boots since this was installed with no sign of the alert. Thanks, Comodo! (:CLP)