Update on Feb 16, 2009. Just updated to firmware 2.2.1.  I have not seen any problem so far.  It seems Safari works more smoothly. It was recommended in previous post not to upgrade to 2.2.1 iPhone firmware.  After a few days, many people experienced iTunes crashing after this upgrade.  Apple issued the following statement to [...]

Apple just released the iPhone 2.2.1  firmware update.  This is a minor update: Improve general stability of the Safari Fix issue  where some images saved from mail do not display correctly in the Camera Roll. Sometimes firmware updates can bring unexpected problems.  For instance, many people experienced significant reduction in battery life when updated to iPhone [...]