Hello, I notice that quite a few people using Comodo firewall with other Anti Virus progs have been having the same problem as me in that CFP.exe has been running non stop using up all or most of the processor power (and delaying shut down in the process).
After much fiddling I changed the configuration ( Manage my configurations in Summary) to that of FIREWALL SECURITY … ACTIVE and removed the CIS suite from configuration.
Immediately the CPU usage dropped down to normal levels and seems to be staying there.
So now I do not have to uninstall my favourite firewall after all. ;D ;D ;D ;D
Hope it works for you others too.