I want to disable the backup process for my iPhone. I tried editing the iTunesPref.xml file already, after I saved it and closed it and restarted iTunes it still backed up, plus when I went back into the file, the text I pasted had disappeared. I made sure to save it. Also when I started iTunes it did weird things like add old songs to my library, I had to hunt down and delete song duplicates. It also reinstalled some apps, causing data to be lost (nothing important). Why can't Apple ever make something easy? I'm on iTunes 9.2.1, phone information in side panel.