I'm a switcher, and enjoying my new MBP. Tonight I used my WD250 external to do a TimeMachine backup. Before I started I copied all my data to my PC computer, because before I can use TimeMachine I needed to reformat the WD250 drive. Anyway after I ran TimeMachine and my Mac backup, I then took the WD250 back to my PC to copy back the data, but it seems my PC doesn't see my WD250 drive anymore. Does that sound right?