I have happily been runinng Computer associates Anti-Virus and Zone Alarm free for many years.
Obviously I am running ZoneAlarm 6.5.737.000 due to conflicts with later versions.
However I have just built a brand new machine using these 2 programs and now find that whenever I installed Zonealarm it will cripple the real-time scanning of the antivirus software. Uninstalling Zonealarm returns things to normal.
I have 2 other machines running the same configuration with no issues.
The other interesting thing to note is that ZoneAlarms AV monitoring seems to show to instances of the AV.
I have even tried a clean install of Windows XP Pro SP2 and no matter which order I install the 2 programs the problem still exists.
Machine SpecPentium 4 Dual core 3.73 Ghz2GB Ram2 Hard DrivesUSB card reader showing as 4 drivesNvidia 8600GTS
Operating System:Windows XP Pro
Product Name:ZoneAlarm (Free)