mplayer issue. video can not be played

Hello everyone,
Useful info about the system:
http://pastebin.com/nPz3yXLd
champloo ~ # qlist -U mplayer
kde-base/mplayerthumbs
media-video/mplayer (3dnow X a52 aalib alsa amr ass cddb cdio cdparanoia dga dirac dts dv dvd dvdnav enca encode faac faad fbcon ggi gif iconv jpeg jpeg2k kernel_linux libcaca lirc live lzo mad md5sum mmx mmxext mng mp3 nas network openal opengl osdmenu png quicktime radio rar real rtc samba schroedinger sdl shm speex sse sse2 ssse3 tga theora toolame tremor truetype twolame unicode v4l v4l2 vaapi vdpau video_cards_mga video_cards_tdfx video_cards_vesa vidix vorbis win32codecs x264 xanim xinerama xscreensaver xv xvid xvmc)
then:

I can’t play any video using mplayer.
I am getting this error:
VO: [xv] 768x432 => 768x432 Planar YV12
mplayer: malloc.c:3096: sYSMALLOc: Assertion `(old_top (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size 0) || ((unsigned long) (old_size) >= (unsigned long)((((__builtin_offsetof (struct malloc_chunk, fd_nextsize))+((2 * (sizeof(size_t))) - 1)) & ~((2 * (sizeof(size_t))) - 1))) && ((old_top)->size & 0x1) && ((unsigned long)old_end & pagemask) == 0)’ failed.

Any ideas?

Similar problem here http://www.calculate-linux.org/boards/3/topics/10408