I did wonder about that, but that can't be the cause. My Gnutella client should never have advertized itself as being available on port 80.

Doing some searching I have found some articles that talk about attacks that you can make on people using Gnutella by falsifying search results in such a way that large amounts of traffic are directed at a choosen port on a machine of you choice.

I guess someone must have done this to me. I have no idea why they picked me though.

Things have quieten down now, I am only getting about half a dozen requests a second now.