I've seen some threads earlier about problems playing movies from the SD card. I have some avi files (divx or xvid) that I play using Mobo video player from the microSD card... for some reason screen goes black after about 30 minutes of playback and I have to close the program and start from scratch. It also won't let me resume from the point, where it stopped... always have to start from beginning. Is that a video player issue, or is this the SD card playback problem? Thanks in advance.