MPlayer_player behavior differences.

[pw44]

Hia,
after setting my MD up, i've found a behavior difference between my code/hybrid and my MD.
On my MD, when playing a .mkv file (MPlayer_player is used), for example, when type #, the language is changed, right arrow skips forward, left arrow skips back, bu twhen doing the same on my core/hybrid, none of this works ( #, ->, <- ). I did check the /root/.mplayer/config on both and they are the same.
Could someone explain why the different behavior?
TIA