I have the same problem described here: http://discussions.apple.com/message.jspa?messageID=10082848#10082848 Basically, the prefpane windows for my tethered iphone's network interfaces (bluetooth & USB) looks like the image link in the post above, and is missing the normal options for network interfaces: www.macblog.sk/files/pictures/snowleopard_iphone_tethering_connectoin_tcp.png I would like to use the polipo caching proxy for tethered browsing, and am unable to enter proxy settings.