Against my better instincts I downloaded and ran your tune up software. Now my PC core dumps on shut down.

It would seem that the software has damaged zonelabs and I am hoping a reinstall will fix the problem. Anyone know where I can get a copy? I am running version: -

ZoneAlarm Extreme Security version:
vsmon version:
Driver version:
Anti-virus engine version:
Anti-virus signature DAT file version: 1057389568
AntiSpam version:
ZoneAlarm Browser Security: 1.5.311.0
ZoneAlarm ForceField Spyware Scanner:
ZoneAlarm ForceField Anti-Phishing Database:
ZoneAlarm ForceField Spyware Sites Database: 04.155

When I run WhoCrashed to analyse the mini dump I get this: -

On Sat 06/08/2011 09:04:32 GMT your computer crashed
crash dump file: C:\WINDOWS\Minidump\Mini080611-06.dmp
This was probably caused by the following module: vsdatant.sys (vsdatant+0x3EBC)
Bugcheck code: 0x1000007F (0xD, 0x0, 0x0, 0x0)
file path: C:\WINDOWS\system32\vsdatant.sys
product: ZoneAlarm Firewalling Driver
company: Check Point Software Technologies LTD
description: ZoneAlarm Firewalling Driver
Bug check description: This indicates that a trap was generated by the Intel CPU and the kernel failed to catch this trap.
This appears to be a typical software driver bug and is not likely to be caused by a hardware problem. This problem might be caused by a thermal issue.
A third party driver was identified as the probable root cause of this system error. It is suggested you look for an update for the following driver: vsdatant.sys (ZoneAlarm Firewalling Driver, Check Point Software Technologies LTD).
Google query: vsdatant.sys Check Point Software Technologies LTD UNEXPECTED_KERNEL_MODE_TRAP_M

Any help greatly appreciated...