Using the built-in media player for the N900, I cannot play ANY kind of video. I can see the thumbnails of the videos and they are displayed correctly, however, if I want to play a video file (also tried the videos captured with the camera) I always get a message that there were no codecs found - however, I installed all codec packs and it was working some weeks ago.

I'm using the latest CSSU and "Extra Decoders Support" v0.4.