CAEBuffer::Shift(void*, size_t): Assertion `(size

Hi,
Since few days I got a XBMC videos crashs.
When I try to start some video I got this crash message :

CAEBuffer::Shift(void*, size_t): Assertion `(size <= m_bufferPos)' failed.
/usr/bin/xbmc : ligne 137 : 3416 Abandon "$LIBDIR/xbmc/xbmc.bin" $SAVED_ARGS
which: no lsb_release in (/usr/local/bin:/usr/bin:/bin:/opt/bin:/usr/x86_64-pc-linux-gnu/gcc-bin/4.6.3:/usr/games/bin:/opt/cuda/bin)

It seem to be good when i start a SD video, i got sound / video but with HD or LiveTV i got this crash.
It work sometimes when I disable VAAPI ( something around 50% )

I don't have navigation sounds from HDMI or internal sound card. I don't use .asoundrc, because I never needed to use it ( just select good output from xbmc's settings ). it was working perfectly before.

I have try to upgrade my system ( kernel / nvidia drivers / xbmc ) it's same. I dunno what try

After some tests, I dunno exactely reason of this crash, I got strange things from sound and video I hope to find issue to this problem


vainfo : http://bpaste.net/show/44585/
xbmc.log : http://bpaste.net/show/44586/

I'm using lastest Margro's git but I got same with xbmc git. I will try for test with stable
My HTPC is under Gentoo Linux

thank so much