[popcornmix]

Just looked at the hardware acceleration settings. only MMAL was checked. When checking OMX also there is no problem whatsoever Now i know that i need OMX enabled but should i leav MMAL enabled also?

Yes, both enabled is fine. It will use omxplayer whenever possible and fallback to mmal when not supported by omxplayer (e.g. DVD menus, alsa audio, AC3 transcoding).