I have two computers, one desktop and one notebook, both with Zone Alarm Internet Security Suite and with the same Zone alarm configuration. During start up the desktop is not doing any visable scan while the notebook is doing a 'Security scan' i.e. going through all of the about 300 000 files with a scan duration of about 2.5 hours.
Why? Any hints?

It is the same configuration and software in both.
OS: Windows 7 Ultimate.
Internet Explorer 9.0.8112......
Desktop: Intel i7-860 @ 2.8 GHz
Notebook: Intel i5-2410M @ 2,3 GHz

ZoneAlarm Security Suite version:
vsmon version:
Driver version:
Anti-virus engine version:
Anti-virus signature DAT file version: 1062774624
ZoneAlarm Browser Security: 1.5.322.0
ZoneAlarm ForceField Spyware Scanner:
ZoneAlarm ForceField Anti-Phishing Database:
ZoneAlarm ForceField Spyware Sites Database: 04.155