I have just uninstalled MSSE and attempted to install Comodo AV. Everything went fine until the last 1% following the reboot, when the message ‘Unable to install Comodo AV’ or words to that effect came up. In addition, the Comodo firewall has also been killed off in the process, so I’ve had to reinstate the windows one. There’s no trace of either the firewall or MSSE in my list of programmes, so I can’t uninstall that which doesn’t appear to exist. Comodo Dragon also crashed once before firing it up to write this. Please help. I’m running XP - altogether too vulnerable.