okay, so I actually have two burners. NERO was working fine on my sony internal burner and that is the one that is now taking 45 minutes to burn with. I just tried using my external burner and it is working fine. Is it safe to assume that the problem is something to do with the internal burner and not NERO? I will check the settings as you suggested, but I have not messed with them so I dont think that they would have been changed, but I will check it out to be sure. Thanks for your help.