As stated above a I bought a mac pro and updated to 10.5.2. When I tried to connect my Lacie external DVD burner to it my computer doesn't seem to recognize it. All I see is "Unknown Device" under the Firewire section of the System Profiler. Does anyone have any ideas how I can get the Mac Pro to find the drive? As a side note, I have been using this drive for a couple of years with a PowerMac G4 without any problems.