Wow, nice support !
I updated the dll and now I have no problems running moi in both landscape and portrait mode (I used to have more problems in portrait mode even when running moi alone).
I can even run mplayer at the same time as moi in landscape mode without problem although the "bug" remains when running both in portrait mode. I wonder why as portrait and landscape mode are supposed to use the same amount of memory (well, same amount of pixels)?

Anyway it is now fully functionnal as is. I will look for system updates to see if that solves the remaining glitches.