I uninstalled the Comodo Firewall 2.4 from my XP home computer. During the uninstall, instructions were given that the machine must reboot to complete removal. From that point on, the computer would never make it through the boot sequence and would die a blue screen death.
Luckily I had just created an image just before adding the Comodo Firewall.
Took a look at the posts on the forum and did not see this. Hope I am the only unfortunate one.