Here's issues i have noticed so far:
*The quality of recorded video from n900 has definitely gone worst. the zooming has got little smoother i guess but not quite there yet. I tried to get video information from the MediaInfo software I have in my laptop but it displays nothing but just the size of the file but for videos recorded prior the update, it shows all infos.
*Mediaplayer widget in the desktop doesn't respond to play button.

These are what I've noticed so far and 'll keep adding as I encounter.