Problem developed in the last week w/ iPhone 4s running iOS7. "Updates" shows 4 updates that need to be applied. When I open up the updates pane, "Update all" is grayed out, but the individual "Update" buttons are blue, however when I click on one, instead of updating the app, it opens the app. I've signed in and out of iTunes (I only have one account), I have closed all apps, and fully turned off and turned on the 'phone, as well as turning off the wireless and trying it with cellular data only. Nothing works.