I installed ZoneAlarm and Windows hung at 98% installed. I rebooted, and ZonAlarm came up doing its 1st time running thing. After reboots, etc., things seemed OK, then Windows hung while idle. After restarting, Windows hung fairly quickly while using the Flock broswer. I restarted and disabled Avira Antivirus before ZoneAlarm could get started, and now things seem to be running OK, but I have no antivirus software running.

Has anyone heard of this problem before? What is the answer?

I am running Vista Home Premium v 6.0 SP2.