Bug#738576: vlc: converting a m4a audio file to ogg file freezes Xorg

[rpnpif]

Package: vlc
Version: 2.0.3-5~bpo60+2
Severity: important


With graphic vlc, converting a m4a audio file to ogg audio file freezes Xorg.
No logs are usable.

But
cvlc file.m4a --sout file.ogg
works fine.

This issue occurs on 3.12.8 kernel and on the latest 3.2.0-backports Debian kernel.

-- System Information:
Debian Release: 6.0.8
  APT prefers oldstable-proposed-updates
  APT policy: (500, 'oldstable-proposed-updates'), (500, 'oldstable')
Architecture: i386 (i686)

Kernel: Linux 3.12.8 (SMP w/1 CPU core)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages vlc depends on:
ii  dpkg                  1.15.8.13          Debian package management system
ii  libaa1                1.4p5-38           ascii art library
ii  libavcodec-extra-53   6:0.8.6-1~bpo60+1  Libav codec library (additional co
ii  libavutil51           6:0.8.6-1~bpo60+1  Libav utility library
ii  libc6                 2.11.3-4           Embedded GNU C Library: Shared lib
ii  libcaca0              0.99.beta17-1      colour ASCII art library
ii  libfreetype6          2.4.9-1.1~bpo60+1  FreeType 2 font engine, shared lib
ii  libfribidi0           0.19.2-1           Free Implementation of the Unicode
ii  libgcc1               1:4.4.5-8          GCC support library
ii  libgl1-mesa-glx [libg 7.10.3-4~bpo60+1   free implementation of the OpenGL 
ii  libice6               2:1.0.6-2          X11 Inter-Client Exchange library
ii  libqtcore4            4:4.6.3-4+squeeze1 Qt 4 core module
ii  libqtgui4             4:4.6.3-4+squeeze1 Qt 4 GUI module
ii  libsdl-image1.2       1.2.10-2+b2        image loading library for Simple D
ii  libsdl1.2debian       1.2.14-6.1         Simple DirectMedia Layer
ii  libsm6                2:1.1.1-1          X11 Session Management library
ii  libstdc++6            4.4.5-8            The GNU Standard C++ Library v3
ii  libtar                1.2.11-6+deb6u1    C library for manipulating tar arc
ii  libva-x11-1           1.0.7-0.0          Video Acceleration (VA) API for Li
ii  libva1                1.0.7-0.0          Video Acceleration (VA) API for Li
ii  libvlccore5           2.0.3-5~bpo60+2    base library for VLC and its modul
ii  libx11-6              2:1.3.3-4+squeeze1 X11 client-side library
ii  libxcb-composite0     1.6-1+squeeze1     X C Binding, composite extension
ii  libxcb-keysyms1       0.3.6-1            utility libraries for X C Binding 
ii  libxcb-randr0         1.6-1+squeeze1     X C Binding, randr extension
ii  libxcb-render0        1.6-1+squeeze1     X C Binding, render extension
ii  libxcb-shape0         1.6-1+squeeze1     X C Binding, shape extension
ii  libxcb-shm0           1.6-1+squeeze1     X C Binding, shm extension
ii  libxcb-xfixes0        1.6-1+squeeze1     X C Binding, xfixes extension
ii  libxcb-xv0            1.6-1+squeeze1     X C Binding, xv extension
ii  libxcb1               1.6-1+squeeze1     X C Binding
ii  libxext6              2:1.1.2-1+squeeze1 X11 miscellaneous extension librar
ii  libxinerama1          2:1.1-3+squeeze1   X11 Xinerama extension library
ii  libxpm4               1:3.5.8-1          X11 pixmap library
ii  ttf-freefont          20090104-7         Freefont Serif, Sans and Mono True
ii  vlc-nox               2.0.3-5~bpo60+2    multimedia player and streamer (wi
ii  zlib1g                1:1.2.3.4.dfsg-3   compression library - runtime

Versions of packages vlc recommends:
ii  vlc-plugin-notify    2.0.3-5~bpo60+2     LibNotify plugin for VLC
pn  vlc-plugin-pulse     <none>              (no description available)
ii  xdg-utils            1.0.2+cvs20100307-2 desktop integration utilities from

Versions of packages vlc suggests:
pn  videolan-doc                  <none>     (no description available)

-- no debconf information