When a game goes to sign on xbox live, the first thing it does is check for a network connection. In laymans terms, the patch makes the game always think that the network cable is unplugged - and it doesnt try to sign onto LIVE. The patch only affects the xblive libs, so system link is not affected. I know search is disabled, but there is a thread in this forum with all the details, which was first discovered by 'smo'.
