I have just sent mine off to Melville, NY from Frederick, MD. I am hoping the firmware upgrade plus the adjustments I requested will help me to appreciate this camera even more. I love its adaptability, ergonomics, and its digitalness....(is that a word??).
Anyway I have experienced in the field, focus problems (back focusing as some have called it) although using the sharpening in capture has fixed 99% of them, and under exposure to a majority of my indoor and some outdoor shots (and that is fixed by using photo editing software too, I just don't like to fool with the pics too much on a computer). I shoot in Auto Mode alot.
If this upgrade does not make me happy I will be willing to trade for a fairly recent F5 body or an F100 with a few accessories to make up for the value difference.