Apple has just released a new version of the iPhone/iPod Touch firmware (version 2.2.1) which includes bug fixes to address Safari crashing and issues relating to picture formatting in the camera roll. It does not look like any new functionality was added.
It takes about 25 minutes to download (via broadband) and update.
I have had Safari crash several times and most recently in the UPinPoint Magic Kingdom Mini guide which embeds Safari to retrieve descriptive information from the web. Every time I tried to return to the mini guide from Safari, the application would crash. I can report that after the update to 2.2.1, it works flawlessly.