I have recently been successful backing up a few DVD's using dvdbackup, DVD2OneX and Toast. However I read on a Mac Forum (not this one) that repeatedly backing up and then trashing the files this creates can damage your hard disk. This has worried me as I don't understand the technical working details of my Mac (though I love it dearly) and I don't want to do any damage that I can't repair. I run the Verify Permissions on the HD regularly, but just lately the Mac seems to be slowing down. Have I done something ? The last 2 movies I have tried to back up haven't worked, they had no sound after using dvdbackup when I tired to play the Video-ts with dvd player. Any help greatly appreciated. Thanks. ps It's an iMac 10.3.8, 800 mhz G4, 768 mb SDRAM, superdrive inside.