Have had nothing but problems since installing it.
Things lock up and/or slow down to include my Lexmark printer, Microsoft Word, IE, Firefox, etc.
I uninstalled it and now use Windows as my Firewall, SpySweeper for anti-spyware, and the FREE AVAST for anti-virus.
I suggest others do the same.
I wonder how long this post will stay before it gets removed.
Operating System:Windows Vista Home Basic
Product Name:ZoneAlarm Internet Security Suite
Software Version:7.1 (Vista)