I got an iPhone today for my birthday and it's been great except for my little update problem.  After installing a bunch of apps I got around to installing iTunes on my computer and syncing it up.  It prompted me to install the latest iPhone code, version 3.1.3, which I did.  Unfortunately, after doing so, none of the apps I installed would work:

• Facebook
• Tweetdeck
• Twitpict
• VNC
• Pandora
• Flashlight
• Weather Channel

Clicking any of these apps would flash the opening sequence and then return me right back to the home screen.  I figured I'd try reinstalling them.  Thankfully, that fixed the issue.

To remove them, I had to press and hold an app icon until they all began to shake and the red X's appeared.  Tapping the red X removes the icon, which I did for each one.  I then went back to the app store and installed them all over again.  Annoying yes, but shame on me for not updating the OS first.

I wonder... will this happen with every update?