@tonyw
The netmask is 255.255.255.0. I type "192.168.1.1" into the gateway address gadget and hit Enter. It stays there in the box, but if you select a different menu window, then go back to "interfaces", it has been changed to 255. etc.
I don't unse Miami in quite the same configuration as yours, so I have a couple of questions first. Are you sure the gateway address IS 192.168.1.1?
Have you tried immediately saving your Miami config after making changes?
Have you also got the interfaces -> eth0 -> edit -> gateway set to "static"?
Let us know how your fare.
