iPhone 2.1 Update (http://www.apple.com/iphone/softwareupdate/) is now out.


Update includes:

-Decrease in call set-up failures and dropped calls
-Significantly better battery life for most users
-Dramatically reduced time to backup to iTunes
-Improved email reliability, notably fetching email from POP and Exchange accounts
-Faster installation of 3rd party applications
-Fixed bugs causing hangs and crashes for users with lots of third party applications
-Improved performance in text messaging
-Faster loading and searching of contacts
-Improved accuracy of the 3G signal strength display
-Repeat alert up to two additional times for incoming text messages
-Option to wipe data after ten failed passcode attempts
-Genius playlist creation

Sync is far faster! No back-up lag.

I hope it cures the app crash problems.