More than two adapters using ad-hoc
I have three computers on a wireless network. The first is a linux box with a USB wireless adapter. It's IP address is 192.168.0.10. The second is running Windows 2000, also using a USB wireless adapter. It's 192.168.0.1. 192.168.0.10 is set up as a gateway to the internet. But I have just bought a Netgear MA111 and set it up on another Linux box, 192.168.0.20. When only the Windows box is connected to the gateway box, it uses the internet fine, and so does the second linux box when it is connected to the gateway on its own. But when I try to use the internet on the Windows box and the second linux box at the same time, neither can use it. They will only work on their own.
As far as I know the adapters are set up ok. They are all set to ad-hoc with the same ESSID and channel and no encryption for the moment. They can all ping each other.