I have the same problem my ZA Extreme do not update. It appears an error sign on my tray icon which says when i hover with my mouse over it that:" security update overdue"

ZoneAlarm Extreme Security version:
vsmon version:
Driver version:
Anti-virus engine version:
Anti-virus signature DAT file version: 1078214976
AntiSpam version:
ZoneAlarm Browser Security: 1.5.350.0

I am using a Windows 7 ultimate 64b