Gigabit (a PoE one, FWIW, although not powering the hub itself). Thanks for the suggestion, but unfortunately I don't think I have a fast switch at all these days...will have a rummage in the old parts cupboard later, but not very hopeful.
It's more a stopgap than a solution, but I might put a periodically run rule in to ping my NAS, and reboot the hub if it can't get a response...
