So, your current IP is eighter in a host cache or in the resume/hostlist of another client. Whoever had your IP before run a gnutella client, no need to worry. I see the same incoming traffic, I'm using pppoe with DSL. Having a working packetfilter/firewall is allways a good idea.

You can find more details in this thread:
http://gnutellaforums.com/showthread...light=incoming