Mplayer segfault on Gutsy x86-64: preinit_libvo

Mplayer worked perfectly on Feisty before I upgraded. I have tried doing a purge remove and then reinstalling mplayer. If I disable compiz and reboot it still occurs. I've tried different -vo's including x11 gl gl2 xv. I rebuild the ~/.gstreamer-0.10 directory in case there was something that was kept from my upgrade from Feisty.

Most importantly, mplayer will play my videos at first but if I start a new mplayer later in my gnome session this is when it will crash! When I reboot or restart X mplayer begins working again. It seems to be something with the screensaver.

Happens with every video. Using the Gutsy nvidia-new drivers. Running AMD64.

Someone else has the same problem here: http://ubuntuforums.org/showthread.php?t=599453 and they reported mplayer continues working for them in a chroot.

And one more thing ... I tried using Valgrind from the instructions at https://wiki.ubuntu.com/Valgrind but mplayer ALWAYS works when I use the valgrind debugger.

Terminal output:
$ mplayer -v options Monster\ -\ 30.avi
MPlayer 2:1.0~rc1-0ubuntu13 (C) 2000-2006 MPlayer Team
............................. (edited)
Using built-in default codecs.conf.
............................. (edited)
Clip info:
 Software: VirtualDubMod 1.5.10.1 (build 2366/release)
get_path('sub/') -> '/home/cappy/.mplayer/sub/'
xscreensaver_disable: Could not find XScreenS
X11 opening display: :0.0
vo: X11 color mask: FFFFFF (R:FF0000 G:FF00 B:FF)
vo: X11 running at 1280x1024 with depth 24 and 32 bpp (":0.0" => local display)
[x11] Detected wm supports NetWM.
[x11] Detected wm supports FULLSCREEN state.
[x11] Detected wm supports ABOVE state.
[x11] Detected wm supports BELOW state.
[x11] Current fstype setting honours FULLSCREEN ABOVE BELOW X atoms
Disabling DPMS
DPMSDisable stat: 1aver window.

MPlayer interrupted by signal 11 in module: preinit_libvo
- MPlayer crashed by bad usage of CPU/FPU/RAM.
...... (edited out debug info) .....
vo: uninit ...