I've just renewed ZoneAlarm and in the process "upgraded" to Zone Alarm Extreme.
Trouble seems to be with the keylogger. When switched on I get a BSOD (0x000000c9 - icsak.sys) whenever I hit a key. No problems if the keylogger is switched off.
System info :
ASUS A7V600-X ACPI (v1009)
1 GB RAM
AMD Sempron 3000+ 2GHz
Windows XP (SP3)
Zone Alarm Extreme v9.1.507.000
Zone Alarm Browser Security v184.108.40.206
Any ideas chaps.