Application: amarok (2.4.3)
KDE Platform Version: 4.6.5 (4.6.5)
Qt Version: 4.7.3
Operating System: Linux 3.0.0-1-amd64 x86_64
Distribution (Platform): Debian unstable

-- Information about the crash:
When I switch between radio stations by double clicking on them in the playlist, Amarok occasionally crashes with around 50% chance.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Amarok (amarok), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fd082c5d780 (LWP 4357))]

Thread 17 (Thread 0x7fd05e5a3700 (LWP 4361)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:216
#1  0x00007fd062dbafb1 in metronom_sync_loop (this=0x126f9f0) at metronom.c:870
#2  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#3  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7fd05eda4700 (LWP 4362)):
#0  0x00007fd07f555723 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=45) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fd078f5b5d4 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007fd078f5bb09 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007fd07fecbb36 in QEventDispatcherGlib::processEvents (this=0x1270960, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fd07fea01d2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fd07fea03cf in QEventLoop::exec (this=0x7fd05eda3db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fd07fdb81ff in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007fd06301692e in ?? () from /usr/lib/qt4/plugins/phonon_backend/phonon_xine.so
#8  0x00007fd07fdbac15 in QThreadPrivate::start (arg=0x128bd00) at thread/qthread_unix.cpp:320
#9  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7fd05f5cf700 (LWP 4364)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd062dcbb0b in fifo_peek_int (this_gen=<value optimized out>) at audio_out.c:348
#2  fifo_peek (this_gen=<value optimized out>) at audio_out.c:388
#3  ao_loop (this_gen=<value optimized out>) at audio_out.c:1015
#4  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7fd05d999700 (LWP 4365)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd062dcbb0b in fifo_peek_int (this_gen=<value optimized out>) at audio_out.c:348
#2  fifo_peek (this_gen=<value optimized out>) at audio_out.c:388
#3  ao_loop (this_gen=<value optimized out>) at audio_out.c:1015
#4  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7fd05d198700 (LWP 4366)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd062dcbb0b in fifo_peek_int (this_gen=<value optimized out>) at audio_out.c:348
#2  fifo_peek (this_gen=<value optimized out>) at audio_out.c:388
#3  ao_loop (this_gen=<value optimized out>) at audio_out.c:1015
#4  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#5  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7fd055aec700 (LWP 4368)):
#0  0x00007fd07f555723 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fd078f5b5d4 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007fd078f5bb09 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007fd07fecbb36 in QEventDispatcherGlib::processEvents (this=0x116cdb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fd07fea01d2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fd07fea03cf in QEventLoop::exec (this=0x7fd055aebdd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fd07fdb81ff in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007fd07fe831ff in QInotifyFileSystemWatcherEngine::run (this=0x14d1b50) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fd07fdbac15 in QThreadPrivate::start (arg=0x14d1b50) at thread/qthread_unix.cpp:320
#9  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7fd0537cb700 (LWP 4369)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd07fdbb0ab in wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fd07d31da54 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x154e660, th=0x14ff900) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fd07d31fffb in ThreadWeaver::WorkingHardState::applyForWork (this=0x14f8190, th=0x14ff900) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fd07d320014 in ThreadWeaver::WorkingHardState::applyForWork (this=0x14f8190, th=0x14ff900) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007fd07d31eebf in ThreadWeaver::ThreadRunHelper::run (this=0x7fd0537cae20, parent=0x154e660, th=0x14ff900) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007fd07d31ef4b in ThreadWeaver::Thread::run (this=0x14ff900) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007fd07fdbac15 in QThreadPrivate::start (arg=0x14ff900) at thread/qthread_unix.cpp:320
#9  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7fd052fca700 (LWP 4370)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd07fdbb0ab in wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fd07d31da54 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x154e660, th=0x1681a10) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fd07d31fffb in ThreadWeaver::WorkingHardState::applyForWork (this=0x14f8190, th=0x1681a10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fd07d320014 in ThreadWeaver::WorkingHardState::applyForWork (this=0x14f8190, th=0x1681a10) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007fd07d31eebf in ThreadWeaver::ThreadRunHelper::run (this=0x7fd052fc9e20, parent=0x154e660, th=0x1681a10) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007fd07d31ef4b in ThreadWeaver::Thread::run (this=0x1681a10) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007fd07fdbac15 in QThreadPrivate::start (arg=0x1681a10) at thread/qthread_unix.cpp:320
#9  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7fd051c82700 (LWP 4371)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd07fdbb0ab in wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fd07d31da54 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x154e660, th=0x178e630) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fd07d31fffb in ThreadWeaver::WorkingHardState::applyForWork (this=0x14f8190, th=0x178e630) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fd07d320014 in ThreadWeaver::WorkingHardState::applyForWork (this=0x14f8190, th=0x178e630) at ../../../threadweaver/Weaver/WorkingHardState.cpp:74
#6  0x00007fd07d31eebf in ThreadWeaver::ThreadRunHelper::run (this=0x7fd051c81e20, parent=0x154e660, th=0x178e630) at ../../../threadweaver/Weaver/Thread.cpp:87
#7  0x00007fd07d31ef4b in ThreadWeaver::Thread::run (this=0x178e630) at ../../../threadweaver/Weaver/Thread.cpp:142
#8  0x00007fd07fdbac15 in QThreadPrivate::start (arg=0x178e630) at thread/qthread_unix.cpp:320
#9  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#10 0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7fd051277700 (LWP 4372)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd07fdbb0ab in wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x1565000, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fd07d31da54 in ThreadWeaver::WeaverImpl::blockThreadUntilJobsAreBeingAssigned (this=0x154e660, th=0x17adda0) at ../../../threadweaver/Weaver/WeaverImpl.cpp:365
#4  0x00007fd07d31fffb in ThreadWeaver::WorkingHardState::applyForWork (this=0x14f8190, th=0x17adda0) at ../../../threadweaver/Weaver/WorkingHardState.cpp:71
#5  0x00007fd07d31eebf in ThreadWeaver::ThreadRunHelper::run (this=0x7fd051276e20, parent=0x154e660, th=0x17adda0) at ../../../threadweaver/Weaver/Thread.cpp:87
#6  0x00007fd07d31ef4b in ThreadWeaver::Thread::run (this=0x17adda0) at ../../../threadweaver/Weaver/Thread.cpp:142
#7  0x00007fd07fdbac15 in QThreadPrivate::start (arg=0x17adda0) at thread/qthread_unix.cpp:320
#8  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#9  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fd04bfff700 (LWP 4373)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd075664bc7 in WTF::TCMalloc_PageHeap::scavengerThread (this=0x7fd075f134e0) at wtf/FastMalloc.cpp:2380
#2  0x00007fd075664d29 in WTF::TCMalloc_PageHeap::runScavengerThread (context=<value optimized out>) at wtf/FastMalloc.cpp:1501
#3  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#4  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fd046359700 (LWP 4376)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd07c358062 in ?? () from /usr/lib/libQtScript.so.4
#2  0x00007fd07c358099 in ?? () from /usr/lib/libQtScript.so.4
#3  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#4  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fd04103a700 (LWP 4397)):
#0  0x00007fd07f559e63 in select () at ../sysdeps/unix/syscall-template.S:82
#1  0x00007fd062de3ca5 in xine_usec_sleep (usec=<value optimized out>) at utils.c:481
#2  0x00007fd062dc89c9 in video_out_loop (this_gen=<value optimized out>) at video_out.c:1246
#3  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#4  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fd040450700 (LWP 4398)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd062dbe7db in fifo_buffer_get (fifo=0x7fd058452e00) at buffer.c:230
#2  0x00007fd062dc46ed in video_decoder_loop (stream_gen=<value optimized out>) at video_decoder.c:134
#3  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#4  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fd03fc4f700 (LWP 4399)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd062dbe7db in fifo_buffer_get (fifo=0x7fd05859c840) at buffer.c:230
#2  0x00007fd062dc5745 in audio_decoder_loop (stream_gen=<value optimized out>) at audio_decoder.c:66
#3  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#4  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fd03f44e700 (LWP 4400)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fd062dcec4b in xine_event_wait (queue_gen=<value optimized out>) at events.c:56
#2  listener_loop (queue_gen=<value optimized out>) at events.c:214
#3  0x00007fd07bd77b40 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#4  0x00007fd07f56036d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fd082c5d780 (LWP 4357)):
[KCrash Handler]
#6  operator== (this=0x174d490, anim=0x11d10c0) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#7  isNull (this=0x174d490, anim=0x11d10c0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:558
#8  operator QWeakPointer<QTimer>::RestrictedBool (this=0x174d490, anim=0x11d10c0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:560
#9  Context::ContextView::addCollapseAnimation (this=0x174d490, anim=0x11d10c0) at ../../src/context/ContextView.cpp:247
#10 0x00007fd0818bdf24 in Context::Applet::collapse (this=0x1889f40, on=<value optimized out>) at ../../src/context/Applet.cpp:320
#11 0x00007fd05044919f in WikipediaApplet::dataUpdated (this=0x1889f40, source=<value optimized out>, data=<value optimized out>) at ../../../../../src/context/applets/wikipedia/WikipediaApplet.cpp:678
#12 0x00007fd05044da5a in WikipediaApplet::qt_metacall (this=0x1889f40, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff49299b20) at ./WikipediaApplet.moc:116
#13 0x00007fd07feb3b2a in QMetaObject::activate (sender=0x1902830, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x7fff49299b20) at kernel/qobject.cpp:3278
#14 0x00007fd07c7902f7 in Plasma::DataContainer::dataUpdated (this=<value optimized out>, _t1=<value optimized out>, _t2=<value optimized out>) at ./datacontainer.moc:112
#15 0x00007fd07c790c5e in Plasma::DataContainer::checkForUpdate (this=0x1902830) at ../../plasma/datacontainer.cpp:327
#16 0x00007fd07c792a3f in timerEvent (this=<value optimized out>, event=<value optimized out>) at ../../plasma/dataengine.cpp:386
#17 Plasma::DataEngine::timerEvent (this=<value optimized out>, event=<value optimized out>) at ../../plasma/dataengine.cpp:361
#18 0x00007fd07feb7409 in QObject::event (this=0x1913d90, e=<value optimized out>) at kernel/qobject.cpp:1181
#19 0x00007fd0808c09f4 in notify_helper (this=0xf93290, receiver=0x1913d90, e=0x7fff4929a260) at kernel/qapplication.cpp:4467
#20 QApplicationPrivate::notify_helper (this=0xf93290, receiver=0x1913d90, e=0x7fff4929a260) at kernel/qapplication.cpp:4439
#21 0x00007fd0808c5881 in QApplication::notify (this=0x7fff4929a560, receiver=0x1913d90, e=0x7fff4929a260) at kernel/qapplication.cpp:4346
#22 0x00007fd082672a66 in KApplication::notify (this=0x7fff4929a560, receiver=0x1913d90, event=0x7fff4929a260) at ../../kdeui/kernel/kapplication.cpp:311
#23 0x00007fd07fea0fcc in QCoreApplication::notifyInternal (this=0x7fff4929a560, receiver=0x1913d90, event=0x7fff4929a260) at kernel/qcoreapplication.cpp:731
#24 0x00007fd07fecd952 in sendEvent (this=0xf8e480) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#25 QTimerInfoList::activateTimers (this=0xf8e480) at kernel/qeventdispatcher_unix.cpp:604
#26 0x00007fd07fecb144 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#27 0x00007fd078f5b09d in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#28 0x00007fd078f5b878 in ?? () from /lib/libglib-2.0.so.0
#29 0x00007fd078f5bb09 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#30 0x00007fd07fecbacf in QEventDispatcherGlib::processEvents (this=0xdf6cb0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#31 0x00007fd0809649ce in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#32 0x00007fd07fea01d2 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#33 0x00007fd07fea03cf in QEventLoop::exec (this=0x7fff4929a4f0, flags=...) at kernel/qeventloop.cpp:201
#34 0x00007fd07fea4577 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#35 0x0000000000409391 in main (argc=1, argv=0x7fff4929cb68) at ../../src/main.cpp:289

Reported using DrKonqi