It's not a fix, but an annoying solution. When I try to sync my apps with an update it would get stuck. So while it is stuck, I hold down on an app and delete all the apps that was stuck and re-sync my iphone 4s with the updated version from my itunes and it seems like it works. Hopeflly this isnt a permanent problem because it is quite annoying to have to go back to each app and relogin such as the photo app "Razzi" I would need to relog my facebook app everytime it has an update which is quite annoying. Hope this works for everyone else.
Steps:
1. Update your apps through itunes
2. Sync your iDevice
3. Look for which ones are left hanging on the waiting/install portion
4. Hold onto an app to get them wiggling and delete the ones that are hanging
5. Once apps are deleted, resync your iDevice with the updated version of the app from itunes
6. If the app needs you to log in, then log in. If not you are good to go.