an you are absolutily sure that there isn't a Other firewall that is not turned off like the firewall of your router or the XP firewall of some other firewall
...
but i also didn't knew that IPS could be much different in the same network...
did you allready try to change the ips into something more the same like me ?? and what about different subnets how can that be ??
(srry if that question is stupid)