ok, this is my setup:
xbox360 connected via ethernet to my laptop.
laptop wirelessly connected to router.
laptop sharing internet connection to xbox360.
the internet connection works fine on the 360, but music / video sharing is a bit of a pain. whenever i want to play a/v stuff off my laptop on the 360, i have to manually change the properties of the ethernet connection from "public" to "private". everytime i switch the 360 off, the connection type is reset to public again. with a network on public, no file sharing is allowed, so this obviously fucks things up.
not a major concern, just a pain in the ass. any ideas?