"A must have for any Windows user needing also needing antispam"4.5 starson by fredsantos
Pros: Fast, streamlined, minimal browsing delays
Cons: No way to start the FW as a Windows kernel service, unstable antispam module for Outlook, suspicious antivirus module
Summary: On my network, we use ZoneAlarm Internet Security 5.5 and Symantec Norton Internet Security 2005. Although the antivirus and antispam modules in Symantec's product seem more mature and more stable, it's firewall interferes with everything you try do do, delaying browsing and sometimes even switches itself off when some Windows security updates are applied.
The Firewall in the Zone Labs product is far more powerfull, far more stable and far less interfering with your work.