Way to go Apple! You never cease to amaze. Really. Although most of us only appreciate the good surprises.
iPhone seems to be experimenting quite a few sync problems under 2.2.1, its brand new update. A good case scenario is that your Apple toy can’t sync no more, a bad case scenario involves your Apple toy becoming a useless brick asking for a restore using iTunes but not being able to get one seeing as iTunes no longer recognizes it. Oh joy. On the bright side, if there is a bright side, your toy will only be in service for a few days. Thank you Apple.
PS: These problems don’t affect all iPhones. I guess it’s a matter of luck. I’ve updated two iPhones and only one ceased to function.
~Good Luck Updating~