I am trying to use a Cat6 ethernet cable to link 2 Book Pros together, both of which are running Snow Leopard 10.6.3. Both 's can reach a Link Speed of 100 Mbit/s when configured Automatically, but when I change the configuration to "Manually" (under System Preferences > Network > Ethernet > Advanced > Ethernet) and change the Speed to "1000baseT" (on both computers) the connection drops immediately and I get a "Cable Unplugged" message under Status. What's the deal? I want to transfer files at 1 gb/s and as far as I know this should work. Anyone know what's going on?