Well in the process of upgrading to 4.2 I had to do the following: Painfully wait through 8 hours of backing up the iPad During the upgrade process it looked like the process was hung up and I pulled and recoonectednthe USB cable. By doing this I had to restore the iPad. No worries right? I just had the entire iPad backed up. Well, after restoring and upgrading I found that there were many apps that were missing. I'm surprised that the restore didn't bring the iPad back to where it was before the upgrade. I estimating that about half of the apps are missing. Has anyone else had this problem?