I just got back from exchanging my iPhone and it went well. When I gave them the list of major and minor items my phone was doing they agreed I needed it exchanged. I did have to get an appt. with the Genius Bar (they ended up working me in) to get the phone activated..something about messing up the warranty on the new one...dunno.Deserve? Maybe. But I'd rather pay than wait.
New phone seems to be doing well but am just getting all my stuff on it now. Must say it was cool getting it out of the box with a full charge!