After upgrading to iOS6, all my apps are gone I upgraded my iPad to iOS 6.  Now all my apps appear to be gone.  Am I missing something?  Have they moved to a new place?  How do I get them back?

(I don't sync my iPad to a computer, if that is relevant.)
If you don't have a backup somewhere (on a computer or in iCloud) you must download all apps again from the App Store.

For the next time go to Settings > iCloud > Storage (in the bottom) > Turn on iCloud-backup.