system
9
… did a reboot and I switched Kerio Firewall off and I disabled all the addons in Firefox, such as LayerBlock and NoScript - it still doesn’t ring the alarm from the Eicar File 
It works fine with Internet Explorer on Win 98, it works fine with Win XP on the laptop - so the router surely can’t be the reason.
End of ideas? 
Sincerly,
Wolf