I downloaded and installed iPhone OS version 2.1 over the weekend.  2.1 eliminated almost all the bugs I was experiencing with my iPhone.  The only remaining bug pertained to my headphones.  When I would plug them in I could hear out of them, but when I made or received phone calls the person on the other end of the line couldn't hear me.  Aslo, the "button" in the mic portion of the headset didn't always work after plugging the headphones in.  To remedy this situation I would have to unplug the headphones from my iPhone and then plug them back in.  Occasionally I would have to unplug/replug multiple times to get them to work.  Although the 2.1 update reduced the number of times this happens, it does still happen.  I have talked with Apple and they have sent me a new set of headphones.  I hope they fix the problem. Aside from that I am back into a love/love relationship with the iPhone.  It is truly an amazing device.  I am amazed at how ingenieus humans can be when they apply the gifts God gave them. - Sean