gnome-alsamixer crashed with SIGSEGV in gam_mixer_show_props_dialog()

Binary package hint: gnome-alsamixer

 after upgrade to ubuntu hardy 8.04 the sound is not working at all.
 my sound card is not even detected anymore ? pleaz help

ProblemType: Crash
Architecture: i386
Date: Sun Mar 23 15:13:00 2008
DistroRelease: Ubuntu 8.04
ExecutablePath: /usr/bin/gnome-alsamixer
NonfreeKernelModules: nvidia
Package: gnome-alsamixer 0.9.7~cvs.20060916.ds.1-1
PackageArchitecture: i386
ProcCmdline: gnome-alsamixer
ProcEnviron:
 PATH=/usr/share/groovy/bin:/usr/lib/jvm/java-6-sun/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: gnome-alsamixer
StacktraceTop:
 gam_mixer_show_props_dialog ()
 g_cclosure_marshal_VOID__VOID ()
 g_closure_invoke () from /usr/lib/libgobject-2.0.so.0
 ?? () from /usr/lib/libgobject-2.0.so.0
 ?? ()
Title: gnome-alsamixer crashed with SIGSEGV in gam_mixer_show_props_dialog()
Uname: Linux 2.6.24-12-386 i686
UserGroups: adm admin audio cdrom dialout dip floppy lpadmin netdev plugdev powerdev scanner video