I am trying to get the 10.5.6 update to work for me. ran it the first night that the update was available. then itunes would not work. tried to download the combo update, but installer not working either. I am running 10.4.11, but every indication says that 10.5.6 is supposed to update tiger as well. so I am kind of stuck. I read the note put out by apple but have no library/updates folder to delete from. help please! UPDATE: it appears that even though apple told my computer, it could be updated, it can't. why would software updater do this to me? has anyone had this happen to them? do we think that if I download 10.4.11 again, I will get all my functionality back? and what I might need to delete?