17Jun/094
Disappearing applications with iPhone 3.0
OK so the don't actually disappear but something odd does happen than can get you worried if you're not expecting it.
If you have more than one page of applications applying the update will cause a small glitch. The addition of the Voice Memo app will cause the application in the bottom right of your first page to move, it puts in on a new second page without any other applications.
Panic not all your other applications are not gone but on pages 3+ and moving the single application from page two will fix the issue and remove the unwanted page.
And thanks to Mashable for their post about the immediate problems that can occur post update: iPhone 3.0 Problems? Here?s the Solution.