I just installed an update to Zone Alarm, 70.408.000. I've been using ZA for a long time. After installing, system required a reboot. The system hung during the boot, saying that it couldn't complete the reboot and if I'd installed new software did I want to go back to the last good point. After three tries using the existing setup, I said yes. The reboot completed and Zone Alarm appeared to have installed successfully. Unfortunately, I've lost access to all my network devices including my wireless card, modem, LAN connection.
I deinstalled Zone Alarm and rolled back to my last good version, 70.337.000. This, of course, didn't change anything.
The system is WinXP SP2. I also use Norton Antivirus.
Any help vastly appreciated!