For me, when I play a video recorded with the N900, it does not show on the screen, only the sound. This happed on the RC and the official release. I can only watch videos transferred to the N900, like my movies. I don't know what to do at this point. I flashed the RC and then flashed the Official version. Maybe something got messed up in the RC....

I am getting ready to reinstall via NSU and I will report back when finished.