I have one Mac and one Windows machine connected directly together via a gigabit crossover cable. I grab files from the Windows machine from the Mac computer. Sometimes when the Windows machine is turned on before the Mac machine, the copy speeds are really slow. When I have the Mac machine on, and then the Windows machine on the speeds are very fast (~75-80MB/sec). At all times, both machines see the link speed as 1.0Gbps. I also use bootcamp to run XP on the Mac, and this causes my Macced XP to not grab files as fast as it should. Any ideas? Basically it is not a stable connection. Both computers have wireless connections. Do you guys think the "Internet Sharing" icon on the Windows box is causing this? I tried to delete it but I can't find a way to do it.