Kmix - Segmentation fault (11)

Always I'm viewing a video, kmix crash (segmentation fault).

Backtrace below:

Application: KMix (kmix), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fd7e98bc7c0 (LWP 7975))]

Thread 3 (Thread 0x7fd7c7c08700 (LWP 7976)):
#0 0x00007fd7def85685 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1 0x00007fd7def85f1b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd7def86124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd7e5f00426 in QEventDispatcherGlib::processEvents (this=0x7fd7c00008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#4 0x00007fd7e5ecfc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5 0x00007fd7e5ecfed7 in QEventLoop::exec (this=0x7fd7c7c07cd0, flags=...) at kernel/qeventloop.cpp:204
#6 0x00007fd7e5dcefa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#7 0x00007fd7e5eaf9ff in QInotifyFileSystemWatcherEngine::run (this=0x23a0490) at io/qfilesystemwatcher_inotify.cpp:248
#8 0x00007fd7e5dd1fcb in QThreadPrivate::start (arg=0x23a0490) at thread/qthread_unix.cpp:298
#9 0x00007fd7dae9f5a4 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007fd7dfaece9a in start_thread (arg=0x7fd7c7c08700) at pthread_create.c:308
#11 0x00007fd7e91854bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fd7c71eb700 (LWP 7977)):
#0 timerSourcePrepare (source=0x7fd7b4002600, timeout=0x7fd7c71eab6c) at kernel/qeventdispatcher_glib.cpp:163
#1 0x00007fd7def8571e in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2 0x00007fd7def85f1b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3 0x00007fd7def86124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4 0x00007fd7e5f00426 in QEventDispatcherGlib::processEvents (this=0x7fd7b40008e0, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5 0x00007fd7e5ecfc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6 0x00007fd7e5ecfed7 in QEventLoop::exec (this=0x7fd7c71eacd0, flags=...) at kernel/qeventloop.cpp:204
#7 0x00007fd7e5dcefa7 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:501
#8 0x00007fd7e5eaf9ff in QInotifyFileSystemWatcherEngine::run (this=0x2833100) at io/qfilesystemwatcher_inotify.cpp:248
#9 0x00007fd7e5dd1fcb in QThreadPrivate::start (arg=0x2833100) at thread/qthread_unix.cpp:298
#10 0x00007fd7dae9f5a4 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007fd7dfaece9a in start_thread (arg=0x7fd7c71eb700) at pthread_create.c:308
#12 0x00007fd7e91854bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd7e98bc7c0 (LWP 7975)):
[KCrash Handler]
#6 0x0000000400000004 in ?? ()
#7 0x00007fd7e94a5e26 in MDWSlider::update (this=0x280b530) at ../../kmix/gui/mdwslider.cpp:1001
#8 0x00007fd7e94a164b in ViewDockAreaPopup::refreshVolumeLevels (this=<optimized out>) at ../../kmix/gui/viewdockareapopup.cpp:168
#9 0x00007fd7e5ee5281 in QMetaObject::activate (sender=0x23c7dd0, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#10 0x00007fd7e5ee5281 in QMetaObject::activate (sender=0x2779080, m=<optimized out>, local_signal_index=<optimized out>, argv=0x0) at kernel/qobject.cpp:3547
#11 0x00007fd7e947ab0c in Mixer_Backend::readSetFromHW (this=0x2779080) at ../../kmix/backends/mixer_backend.cpp:155
#12 0x00007fd7e948adf5 in sink_cb (c=<optimized out>, i=<optimized out>, eol=<optimized out>) at ../../kmix/backends/mixer_pulse.cpp:191
#13 0x00007fd7e7862944 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#14 0x00007fd7df4a4693 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#15 0x00007fd7df4a4a03 in pa_pdispatch_run () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#16 0x00007fd7e7858bdd in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#17 0x00007fd7df4a92a9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulsecommon-1.1.so
#18 0x00007fd7e7646ab3 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse-mainloop-glib.so.0
#19 0x00007fd7def85c9a in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007fd7def86060 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fd7def86124 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fd7e5f003bf in QEventDispatcherGlib::processEvents (this=0x229fad0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#23 0x00007fd7e6bead5e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00007fd7e5ecfc82 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#25 0x00007fd7e5ecfed7 in QEventLoop::exec (this=0x7fffe4e6c5b0, flags=...) at kernel/qeventloop.cpp:204
#26 0x00007fd7e5ed4f67 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#27 0x00007fd7e94923e2 in kdemain (argc=1, argv=0x7fffe4e6cb38) at ../../kmix/apps/main.cpp:76
#28 0x00007fd7e90b476d in __libc_start_main (main=0x400630 <main(int, char**)>, argc=1, ubp_av=0x7fffe4e6cb38, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffe4e6cb28) at libc-start.c:226
#29 0x0000000000400661 in _start ()

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: kmix 4:4.8.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14
Uname: Linux 3.2.0-24-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.0.1-0ubuntu7
Architecture: amd64
Date: Sat May 5 22:46:43 2012
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120228.1)
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: kdemultimedia
UpgradeStatus: No upgrade log present (probably fresh install)