Today, i've installed this dvd-burner. I've installed patchburn 3, Installation complete. I restart my g4.When i go to system profile he recognise the driver and says that i can burn disc's. When i put a dvd/cd empty or burned in the driver he read it, after 30 seconds it put the disc out. I tried it with itunes, toast, finder,... I don't know what's wrong, is it damaged? PLEASE NEED SOME HELP!!!!!!