I'm a little curious. Why are there so many people installing Blu-Ray drives on their MacPro's knowing full well the OS doesn't support it? You know it's not gonna play any movies - what so ever!!! Don't you? You did do some research prior to buying the hardware, no? So, one can only assume your installing them, so you can use them as cheap mass storage device perhaps, for backup and maybe film production? I sure do hope so.. cause burning to BR is somewhat limited for now. Sorry, I've read so many thread on those forums recently about people who've installed BR drives only to discover they can't play movies or burn BR disks via the OS... and in a way, it's funny!! BR Drives on the Mac is for Cheap Mass Storage and maybe Film production only. Mac's don't have HDCP compliance and most users don't want it. Me included.