I have the same issue since today. Unable to download any updates for certain apps. I can download a few random free apps but for some reason not Facebook (and a random game I have). If I delete Facebook, I cannot reinstall it.
Here is what I have done:
- Restarted iPad numerous times.
- Synced with iTunes and restored Facebook. Still cannot download update.
- Tried downloading update through iTunes but unsuccessful. Error 11111 - An unknown error has occured.
- Signed out of iTunes store and back in (both on PC and on iPad). Still same issue.
What is going on? I do not believe this to be tied to iOS 6.0.1, since I'm confident I was able to update app after the switch to 6.0.1.
Update: after some testing, I can say that anything I have downloaded before I cannot download (or update) again. If I download a new app and delete it, it will not let me install it again. Just briefly starts and then immediately quits without error. Only from iTunes on PC does it show me the 11111 error.