Okay I found a fix for a different game:
Free version
Uninstall the component called Zone Alarm Toolbar:
Open "Add or remove programs"
Select the item called Zone Alarm Toolbar
Click Uninstall and follow instructions on-screen
Restart the PC
Full version (should work for the free version as well)
Disable the ZoneAlarm Toolbar IswSvc service:
Right-click Computer and select Manage
On the left, under Services and Applications select Services
Right-click a service named "ZoneAlarm Toolbar IswSvc" and select Properties
For Startup type, select Disabled
Click OK
Restart the PC
Tried it, worked!