It usually starts when browsing files in explorer, or when browsing the Start menu. The computer becomes extremely sluggish, and if you click around, a message says that explorer needs to be restarded. If you don't, the sluggishness persists until you have to reboot the machine in despair.
I tried many things, but the only one that helped was to shut down ZA altogether. I cannot reproduce the problem without it, and if I shut down ZA after the first symptom, the machine runs smoothly afterwards. I tried to
limit the action of ZA, to suppress
the firewall entirely, to no avail. If it is there, explorer will come to a halt. I just have to shut it down to use the computer (Dual Xeon with 4GB of ram).
Operating System:Windows Vista Ultimate
Software Version:7.1 (Vista)
Product Name:ZoneAlarm Internet Security Suite