I've burned some data DVDs. Now when I attempt to copy the data off the DVD to any (external) drive (OR even the start up disk) I get the "prohibited" (a white no smoking icon with pointer) symbol. The computer will not allow me to copy to the destination. I've repaired my permissions, verified and repaired the start-up disk from the original OSX Installation disc using Disc Utility. The "get info" page for the DVD has "ignore ownership on this volume" checked. All ownership & Permissions for the disc volume and HD allow for read & write access. Whats happenning? Can anyone help me in trying to fix this?