Defunct Rio? Connection problem

One of my Rios has packed up and will not connect. All the others on the same network are working fine. I have tried all the usual tricks -rebooting hubs/switches, powering off/on etc. It is obtaining an IP address (in the appropriate range as configured by the ARM DHCP) which I can see on the Rio splash screen when it eventually gives up trying to make a connection. I can also ping it. However, it will not connect to ARM or to tRio.

Any ideas?

M

My Setup is W2K, ARM, tRio all on a Cat5 LAN

I can answer this myself. Turned out to be corrupted ARM software. A fresh install solved it.

M