Hmm, that's the first time I've ever seen a 5-port cheap'n'cheerful switch stop forwarding packets. The normal failure mode is to turn into a hub, not a black hole.
I think this falls into the category of "It did *what* to the network? Cool!"
(for those who are curious, I managed this by unplugging a wireless bridge and instead plugging a wired link into a different port. I think the switch kept forwarding all packets to the port the bridge was in, rather than be sensible and broadcast until it worked out where to send them)
I'm intrigued. Without really trying, I've managed to make my site rank suprisingly highly in Google for things like "Giant's Causeway" or "Petworth Lake sunset".
Looking through web logs reveals all sorts of interesting behaviour. I had no idea there were so many search engines actively being used.