Hmmm, interesting point. My client machine is on a different subnet from my rios. The Linux server is dual-homed on both subnets and is acting as the router between the subnets using straight IP forwarding. There shouldn't be any firewalling going on but it is something for me to check. I've used both ip addresses to connect to the server and get the same Java error on both.

Thanks for the pointer. Hope you can get onto the Java website soon! :-)

Cheers

David