xfce4-mixer-plugin crashed with SIGSEGV in free()

[Florent]

Binary package hint: xfce4-mixer

I found this error in the systray after a reboot. I don't know what happened.

ProblemType: Crash
Architecture: i386
CrashCounter: 1
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/lib/xfce4/panel-plugins/xfce4-mixer-plugin
NonfreeKernelModules: ath_hal
Package: xfce4-mixer 1:4.5.99.1-0ubuntu1
ProcCmdline: /usr/lib/xfce4/panel-plugins/xfce4-mixer-plugin socket_id 20971585 name xfce4-mixer-plugin id 12340441880 display_name Mixer size 38 screen_position 7
ProcEnviron:
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: xfce4-mixer
StacktraceTop:
 free () from /lib/tls/i686/cmov/libc.so.6
 g_free () from /usr/lib/libglib-2.0.so.0
 ?? ()
 g_cclosure_marshal_VOID__VOID ()
 g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
Title: xfce4-mixer-plugin crashed with SIGSEGV in free()
Uname: Linux 2.6.28-8-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare