I used to be able to plug in my PBG4 to my Mac Pro's second ethernet port and transfer files at fast gigabit speeds. A few weeks ago I tried this and, while it worked, the speeds were SLOW. Now today when I try it the Finder locks up and *can't* be force quit (and if I try everything else goes down with it). Eventually the transfer times out and the Finder relaunches. Update: I got it working again but it's still slow, not the speeds I should be seeing. The only changes I can think of are that I've probably upgraded to 10.4.10 on both machine since the last time it was working properly (I'm not willing to downgrade to find out). I know the CAT5 cable is good and the ethernet ports are good. Airport is turned off on both machines so I know it's going over ethernet. I also have VMWare installed with I know adds its own "ethernet port", I wonder if that could be related?