I just updated my iTunes to 4.7.1 and when I went to purchase a song, during the download process I keep getting an error message that states "There was an error storing your authorization information on this computer. You do not have enough access privileges for this operation." Someone suggested looking in the library folder to see if you have the receipts folder, and I do, and it has Itunes 4 in it. I also looked in my computer and the owner permissions is checked for read and write. Does anyone know how to fix this problem? Please help!!