Ever since I upgraded to 4.2 on my iPhone 4 and installed the new FIND MY IPHONE free app with Mobile Me, I have had problems! I set up the account but it gave me a new ID with @me.com at the end of my password. I since changed my itunes account on my pc with the new password as I realized I couldn't get on to Itunes, and also checked it on my iphone 4 (by going to utilities and then store). the new password works and shows up - but when I go to the app store on the phone it shows my old ID password as not having the @me.com- therefore I can't access it. I did a soft reset but it still is not working. So I can't use the store on my iphone at all.... HELP!!!