I have been having the shutdown problem after installing the 8.0 update. I can shut down normally if I exit ZoneAlarm and then shutdown. Not fix but it shuts down normally. I am not experiencing any of the other problems. When is Zone Alarm going to help.Hope this helps someone outthere.
Good luck all

Operating System:Windows XP Home Edition
Software Version:8.0
Product Name:ZoneAlarm Internet Security Suite