Apple has released update 2.2.1 for iPhone and iPod. It's supposed to improve Safari's stability and fix an image
issue in which pictures saved from Mail don't display properly in the
Camera Roll.
For iPod Touch the update includes a fix for an issue that caused Apple Lossless (ALAC)
audio files to skip when played.
The update is 245MB and is available by syncing the iPhone to your computer.