I have the same Problem. I have collected a few facts about that problem (tearing?): - it only occurs with VLC v.1.03, v.1.02 is OK! - it doesn't seem to be OS related; it happens on Win XP SP3 and Win 7 64-bit. - it hasn't to do with VSync! - both, ATI and NVIDIA GFX produces same tearing! - for me...