this one:
when u take photo using the timestamp.
lasttime green color.
now become red, like the old SE phones.
somemore, when u take photo. it'll hang there until screen standby (~1min).
then. headset.
i use the screen brightness at 50% (to make battery lifetime twice)
when u insert the headset, usually the screen would go brighter and flash for 5sec. nowe even worse, the screen is off instead, so during first 5sec after i plugged in any headset the screen very dark (like the condition where keypad is locked.)
and then. erm actually not a bug, this is a removed function that is the video preview is removed now on. but instead java restriction is also removed (yay!).
after all, i said its not a big deal, just the light prob and timestamp.
but i feel that's quite annoying for me. but no choice, must wait till the next firmware released. hope the timestamp color green again

*already ask ppl on esato about this they said its normal.