Bhe, allora è strano, questo è il mio OUTPUT su CRUX :
bash-2.05a# mplayer
MPlayer 0.92-3.2.3 (C) 2000-2003 MPlayer Team
CPU: Advanced Micro Devices (Family: 6, Stepping: 1)
Detected cache-line size is 64 bytes
CPUflags: MMX: 1 MMX2: 1 3DNow: 1 3DNow2: 1 SSE: 1 SSE2: 0
Compiled for x86 CPU with extensions: MMX MMX2 3DNow 3DNowEx SSE
Reading config file /usr/etc/mplayer/mplayer.conf
Reading config file /root/.mplayer/config
[cfg] read config file: /root/.mplayer/gui.conf
Reading config file /root/.mplayer/gui.conf
vo: X11 running at 1280x1024 with depth 24 and 32 bpp (":0.0" => local display)
Reading /root/.mplayer/codecs.conf: can't open '/root/.mplayer/codecs.conf': No such file or directory
Reading /usr/etc/mplayer/codecs.conf: 50 audio & 136 video codecs
font: can't open file: /root/.mplayer/font/font.desc
Font /usr/share/mplayer/font/font.desc loaded successfully! (206 chars)
Using Linux hardware RTC timing (1024Hz).
Can't open input config file /root/.mplayer/input.conf: No such file or directory
Input config file /usr/etc/mplayer/input.conf parsed: 52 binds
SKIN dir 1: '/root/.mplayer/Skin'
SKIN dir 2: '/usr/share/mplayer/Skin'
In questo caso lanciato come root
Come vedi è simile , solo che io ho tutti i files di configurazione (ma non credo sia quello il problema) .
Prova a ricompilarlo .
Fai overclock?
Hai CFLAGS particolari settate?
Ciao