After recently moving from PC to imac I was disappointed to find with the imac that it is not possible to multisession dvd's. I find that it is only possible to multisession with a cd/cd-r using disk utility. It would seem that the only way to use a DVD is to save everything to a memory stick and then eventually copy to a dvd. Has anyone used alternative software for burning dvd's, I have read somewhere that this is not really a success. By he way I have osx 10.6.2.