I bought my iphone 4 five days ago, and beginning yesterday, it has not allowed me to update apps. I updated an app yesterday and the icon is replaced by a gray box and the completion bar along the bottom that normally fills in blue as the app downloads remains black (0% downloaded). Underneath the icon, it just says "Waiting..." I tried to update 3 more apps today with the same problem. Unfortunately, it doesn't even give me the option to erase the apps (no 'X' on these icons when I hold down the home key(. When I go to the app in the app store, it says 'installed', and doesn't allow me to click on it. On my computer when I sync, it says all apps are up to date, including these apps. Please help!