I may have stumbled upon a clue for all the BSOD cases with Comodo Firewall 126.96.36.199, or maybe not. Those of you who are more able technically than I am can check this out.
My PC is just a standard Dell with Windows XP Home Edition. No interesting software, or configuration.
Every time I installed Comodo Firewall 188.8.131.52, either at reboot after install or within an hour after, I would get that BSOD/Stop Error that is all the posts I’ve been reading. The XP Security Center would also say that Comodo was still on even after it had been uninstalled. Temporarily, I had been using the latest ZoneAlarm untill someone posted an answer or Comodo posted an update or patch. But I decided to try once more.
After uninstalling ZoneAlarm and removing it from the registry, I rebooted into Safe Mode as Administrator, located WBEM in the sytem32 folder and deleted the Repository folder and then rebooted.
Then I reinstalled Comodo Firewall 184.108.40.206 as usual EXCEPT I turned off the XP firewall BEFORE intalling instead of allowing the Comodo installation turn it off for me.
NO BSOD - Like I said, those of you who are more technical than me can check it out.